_______1. solution a. capable of being dissolved _______2. solute
... Explain how each of the following can affect the rate of a reaction. 113. The nature of the reactants means ___________________________________________________ This can make the reaction slower if ___________________________________________________ This can make the reaction rate faster if ________ ...
... Explain how each of the following can affect the rate of a reaction. 113. The nature of the reactants means ___________________________________________________ This can make the reaction slower if ___________________________________________________ This can make the reaction rate faster if ________ ...
AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 TEST
... ANSWER: http://apcentral.collegeboard.com/apc/public/repository/chemistry-released-exam1999.pdf The “correct” answers are shown. In addition, actual student answers are shown, with analyses of their answers. (a) Consider the carbon dioxide molecule, CO2, and the carbonate ion, CO3 2-. (i) Draw the c ...
... ANSWER: http://apcentral.collegeboard.com/apc/public/repository/chemistry-released-exam1999.pdf The “correct” answers are shown. In addition, actual student answers are shown, with analyses of their answers. (a) Consider the carbon dioxide molecule, CO2, and the carbonate ion, CO3 2-. (i) Draw the c ...
AP CHEMISTRY – Source: 1999 AP Exam CHAPTER 8 PRACTICE
... Directions: Each set of lettered choice below refers to the numbered statement immediately following it. Select the one lettered choice that best fits each statement and then fill in the corresponding oval on the answer sheet. A choice may be used once, more than once, or not at all in each set. Que ...
... Directions: Each set of lettered choice below refers to the numbered statement immediately following it. Select the one lettered choice that best fits each statement and then fill in the corresponding oval on the answer sheet. A choice may be used once, more than once, or not at all in each set. Que ...
File
... Dissolving Covalent Compounds • C12H22O11 (s) C12H22O11 (aq) • NO dissociation because NO ions • Sucrose dissolves in water because sugar is polar (-OH group), but dissociation does not occur. Sucrose molecules are simply separated from each other. No ions are formed ...
... Dissolving Covalent Compounds • C12H22O11 (s) C12H22O11 (aq) • NO dissociation because NO ions • Sucrose dissolves in water because sugar is polar (-OH group), but dissociation does not occur. Sucrose molecules are simply separated from each other. No ions are formed ...
Quiz Samples
... Dissolving the solid copper oxide CuO on filter is an example of: a) washing b) reaction The purpose of adding Mg to copper sulfate solution is: a) producing copper metal from salt b) consuming of excess sulfuric acid c) dissolving of magnesium The purpose of adding sulfuric acid to the precipitate, ...
... Dissolving the solid copper oxide CuO on filter is an example of: a) washing b) reaction The purpose of adding Mg to copper sulfate solution is: a) producing copper metal from salt b) consuming of excess sulfuric acid c) dissolving of magnesium The purpose of adding sulfuric acid to the precipitate, ...
CH 14-15 Chapter 14-15 review wkey
... 15. According to collision theory, which of the following factors does NOT influence the rate of reaction? a) collision frequency b) collision energy c) collision orientation d) collision rebound direction e) none of these 16. What distance corresponds to the activation energy for the reaction of X ...
... 15. According to collision theory, which of the following factors does NOT influence the rate of reaction? a) collision frequency b) collision energy c) collision orientation d) collision rebound direction e) none of these 16. What distance corresponds to the activation energy for the reaction of X ...
File
... much more sensitive method of determining the end point. However, if the starch is added to a solution which contains a great deal of iodine, the complex which forms may not be reversible. Therefore, the starch is not added until shortly before the end point is reached. ...
... much more sensitive method of determining the end point. However, if the starch is added to a solution which contains a great deal of iodine, the complex which forms may not be reversible. Therefore, the starch is not added until shortly before the end point is reached. ...
Part II - American Chemical Society
... Part II of this test requires that student answers be written in a response booklet of blank pages. Only this “Blue Book” is graded for a score on Part II. Testing materials, scratch paper, and the “Blue Book” should be made available to the student only during the examination period. All testing ma ...
... Part II of this test requires that student answers be written in a response booklet of blank pages. Only this “Blue Book” is graded for a score on Part II. Testing materials, scratch paper, and the “Blue Book” should be made available to the student only during the examination period. All testing ma ...
Full answers
... The equilibrium constant in terms of pressures is first converted into the equilibrium constant in terms of pressures using Kp = Kc(RT)Δn. The reaction involves the conversion of 4 mol of gas to 5 mol of gas so Δn = +1 and: Kp = Kc(RT)Δn = (2.23 × 10-5) × (0.08206 × 973)1 = 0.00178 Note that as Kc i ...
... The equilibrium constant in terms of pressures is first converted into the equilibrium constant in terms of pressures using Kp = Kc(RT)Δn. The reaction involves the conversion of 4 mol of gas to 5 mol of gas so Δn = +1 and: Kp = Kc(RT)Δn = (2.23 × 10-5) × (0.08206 × 973)1 = 0.00178 Note that as Kc i ...
Tall: 1) The decomposition of CaCO3 is an endothermic process:
... A 1.00 mol sample of CO2 is heated to 1000K with excess graphite in a container of volume 40.0 L. At this temperature, Kc is 2.11x10-2 for the reaction: C(graphite) + CO2(g) 2 CO(g) a) b) ...
... A 1.00 mol sample of CO2 is heated to 1000K with excess graphite in a container of volume 40.0 L. At this temperature, Kc is 2.11x10-2 for the reaction: C(graphite) + CO2(g) 2 CO(g) a) b) ...
Ch 8 Lecture Notes
... Cu+ Hg22+ Ag+ Pb2+ NaCl(aq) + AgNO3(aq) AgCl(s) + NaNO3(aq) Na+(aq) + Ag+(aq) + Cl-(aq) + NO3-(aq) AgCl(s) + Na+(aq) + NO3-(aq) ...
... Cu+ Hg22+ Ag+ Pb2+ NaCl(aq) + AgNO3(aq) AgCl(s) + NaNO3(aq) Na+(aq) + Ag+(aq) + Cl-(aq) + NO3-(aq) AgCl(s) + Na+(aq) + NO3-(aq) ...
Equilibrium Review Problems N2(g) + H2(g) NH3(g) 1. When 3.29
... the reaction represented above occurs. After the reactants and the product reach equilibrium and the initial temperature is restored, the flask is found to contain 0.30 mole of S0 3. Based on these results, the expression for the equilibrium constant, K c, of the reaction is (A) (0.30)2 / [(0.45)(0. ...
... the reaction represented above occurs. After the reactants and the product reach equilibrium and the initial temperature is restored, the flask is found to contain 0.30 mole of S0 3. Based on these results, the expression for the equilibrium constant, K c, of the reaction is (A) (0.30)2 / [(0.45)(0. ...
Chemistry Name Mr. Reger Review Guide – Ch. 9
... 3 Cl2(g) + 6 NaOH(aq) 5 NaCl(aq) + NaClO3(aq) + 3 H2O(l) 11. Use the equation in the question above to answer the following: a) What is the theoretical yield of NaClO3 if 4.0mol Cl2 is reacted with excess NaOH? b) If 94.2g NaClO3 is obtained, what is the % yield? c) A different student performs th ...
... 3 Cl2(g) + 6 NaOH(aq) 5 NaCl(aq) + NaClO3(aq) + 3 H2O(l) 11. Use the equation in the question above to answer the following: a) What is the theoretical yield of NaClO3 if 4.0mol Cl2 is reacted with excess NaOH? b) If 94.2g NaClO3 is obtained, what is the % yield? c) A different student performs th ...
Combined
... The average rate of decrease in mass of sodium carbonate was 15.9 g min1 The average rate of decrease in concentration of the acid was 0.0125 mol dm3 s1 The average rate of increase in volume of carbon dioxide was 60 cm3 s1 Sodium carbonate and sulphuric acid just reacted completely. To be conti ...
... The average rate of decrease in mass of sodium carbonate was 15.9 g min1 The average rate of decrease in concentration of the acid was 0.0125 mol dm3 s1 The average rate of increase in volume of carbon dioxide was 60 cm3 s1 Sodium carbonate and sulphuric acid just reacted completely. To be conti ...
Thermodynamics - WordPress.com
... 17. Explain the spontaineity of Exothermic reactions using Gibb’s equation. 18. Explain the spontaineity of endothermic reactions using Gibb’s equation. 19. Calculate the entropy change in surroundings when 1.0 mol of H2O( l ) is formed under standard conditions. Given ∆HΘ = -286 kJ mol-1 20. Under ...
... 17. Explain the spontaineity of Exothermic reactions using Gibb’s equation. 18. Explain the spontaineity of endothermic reactions using Gibb’s equation. 19. Calculate the entropy change in surroundings when 1.0 mol of H2O( l ) is formed under standard conditions. Given ∆HΘ = -286 kJ mol-1 20. Under ...
2009 - NESACS
... 69. In the diagram to the right, the smaller filled circles represent electrons. The larger filled circles represent Si atoms. The patterned circle represents a doping atom. What type of semi-conductor is shown in this diagram? A. a gallium-doped p-type silicon semi-conductor B. a gallium-doped n-ty ...
... 69. In the diagram to the right, the smaller filled circles represent electrons. The larger filled circles represent Si atoms. The patterned circle represents a doping atom. What type of semi-conductor is shown in this diagram? A. a gallium-doped p-type silicon semi-conductor B. a gallium-doped n-ty ...
X012/12/02
... 6 The answer to each question is either A, B, C or D. Decide what your answer is, then, using your pencil, put a horizontal line in the space provided (see sample question below). 7 There is only one correct answer to each question. 8 Any rough working should be done on the question paper o ...
... 6 The answer to each question is either A, B, C or D. Decide what your answer is, then, using your pencil, put a horizontal line in the space provided (see sample question below). 7 There is only one correct answer to each question. 8 Any rough working should be done on the question paper o ...
Aqueous chemistry is a very important component to laboratory
... 5. Add solvent until the solution reaches its final volume. The bottom of the meniscus should be on the flask mark. When making a solution using two liquids, follow the same steps, except in step 1, add the solute (in the liquid form) before adding the solvent in step 2. It is common to make up 1 co ...
... 5. Add solvent until the solution reaches its final volume. The bottom of the meniscus should be on the flask mark. When making a solution using two liquids, follow the same steps, except in step 1, add the solute (in the liquid form) before adding the solvent in step 2. It is common to make up 1 co ...
Chemistry1100 Practice Exam 4 Choose the best answer for
... 11. A compound has an empirical formula CH2- An independent analysis gave a value of 70 for its molar mass. What is the correct molecular formula? a. C2H4 b. C3H6 c. C4O8 d. C5H10 e. C5H11 12. Given the balanced chemical equation, C4H4 + 5 O2 → 4 CO2 + 2 H2O. If 0.3618 moles of C4H4 are allowed to ...
... 11. A compound has an empirical formula CH2- An independent analysis gave a value of 70 for its molar mass. What is the correct molecular formula? a. C2H4 b. C3H6 c. C4O8 d. C5H10 e. C5H11 12. Given the balanced chemical equation, C4H4 + 5 O2 → 4 CO2 + 2 H2O. If 0.3618 moles of C4H4 are allowed to ...
Chapter 4: Aqueous Reactions and Solution Stoichiometry
... solution after any possible reaction? ( H+ ions will react with ions to form H2O.) ...
... solution after any possible reaction? ( H+ ions will react with ions to form H2O.) ...
Part II - American Chemical Society
... # ( 0.00335 $ 0.00319) and solving for E a gives : E a = 1.00 # 10 5 J " mol-1 = 100 kJ " mol-1 . (Note 8.314 J " mol-1 " K -1 that using rates, rather than rate constants in the argument of the natural log is an alternative, correct method.) Page 2 ...
... # ( 0.00335 $ 0.00319) and solving for E a gives : E a = 1.00 # 10 5 J " mol-1 = 100 kJ " mol-1 . (Note 8.314 J " mol-1 " K -1 that using rates, rather than rate constants in the argument of the natural log is an alternative, correct method.) Page 2 ...
Chemistry II Exams and Answer Keys 2015 Season
... the blood stream. As a diver swims to the surface, the gases are released. This can cause a very painful condition, called the bends. Decompression sickness is one danger of diving. In order to prevent the bends from happening, a scuba tank is filled with gases that are not very soluble in water. Wh ...
... the blood stream. As a diver swims to the surface, the gases are released. This can cause a very painful condition, called the bends. Decompression sickness is one danger of diving. In order to prevent the bends from happening, a scuba tank is filled with gases that are not very soluble in water. Wh ...
3. Chemical changes and Structure Unit Questions
... C the density decreases D the melting point increases. 18. Which equation represents the first ionisation energy of a diatomic element, X 2? A ½ X2(s) X+(g) B ½ X2(g) X–(g) C X(g) X+(g) D X(s) X–(g) 19. Which of the following equations represents the first ionisation energy of fluorine? A F– ...
... C the density decreases D the melting point increases. 18. Which equation represents the first ionisation energy of a diatomic element, X 2? A ½ X2(s) X+(g) B ½ X2(g) X–(g) C X(g) X+(g) D X(s) X–(g) 19. Which of the following equations represents the first ionisation energy of fluorine? A F– ...
Major 1 Term 101 - KFUPM Faculty List
... That does not exist, only HSO4-, the hydrogen sulfate ion exists. C) H2S That is either hydrogen sulfide when in gas phase, or hydrosulfuric acid when in aqueous solution. D) H2SO3 Correct: the acid related to sulfite ion, SO32-, is sulfurous acid E) H2SO4 Incorrect: the acid related to sulfate ion, ...
... That does not exist, only HSO4-, the hydrogen sulfate ion exists. C) H2S That is either hydrogen sulfide when in gas phase, or hydrosulfuric acid when in aqueous solution. D) H2SO3 Correct: the acid related to sulfite ion, SO32-, is sulfurous acid E) H2SO4 Incorrect: the acid related to sulfate ion, ...
2009 U. S. NATIONAL CHEMISTRY OLYMPIAD
... b. Account for the fact that standard enthalpies of formation of compounds at 25˚C may be either positive or negative. c. Explain why all elements and compounds have positive S˚ values at 25˚C. d. Give an example of a chemical species that does not have a positive S˚ value at 25 ˚C and explain why i ...
... b. Account for the fact that standard enthalpies of formation of compounds at 25˚C may be either positive or negative. c. Explain why all elements and compounds have positive S˚ values at 25˚C. d. Give an example of a chemical species that does not have a positive S˚ value at 25 ˚C and explain why i ...
Thermometric titration
A thermometric titration is one of a number of instrumental titration techniques where endpoints can be located accurately and precisely without a subjective interpretation on the part of the analyst as to their location. Enthalpy change is arguably the most fundamental and universal property of chemical reactions, so the observation of temperature change is a natural choice in monitoring their progress. It is not a new technique, with possibly the first recognizable thermometric titration method reported early in the 20th century (Bell and Cowell, 1913). In spite of its attractive features, and in spite of the considerable research that has been conducted in the field and a large body of applications that have been developed; it has been until now an under-utilized technique in the critical area of industrial process and quality control. Automated potentiometric titration systems have pre-dominated in this area since the 1970s. With the advent of cheap computers able to handle the powerful thermometric titration software, development has now reached the stage where easy to use automated thermometric titration systems can in many cases offer a superior alternative to potentiometric titrimetry.The applications of thermometric titrimetry discussed on this page are by no means exhaustive. The reader is referred to the bibliography for further reading on the subject.