Chemistry II Exams and Answer Keys 2015 Season
... If 2.0 mol of A are converted into products at a pressure of 1.25 atm and 1000.0°C, calculate the ΔE for the reaction? 1 liter × atm = 101.3 J A. 220 kJ B. −220 kJ C. 6.20 kJ D. −6.20 kJ 19. When elements with electron configuration 1s2 2s2 2p6 3s2 3p2 and 1s2 2s2 2p4 combine, they form a(n) _______ ...
... If 2.0 mol of A are converted into products at a pressure of 1.25 atm and 1000.0°C, calculate the ΔE for the reaction? 1 liter × atm = 101.3 J A. 220 kJ B. −220 kJ C. 6.20 kJ D. −6.20 kJ 19. When elements with electron configuration 1s2 2s2 2p6 3s2 3p2 and 1s2 2s2 2p4 combine, they form a(n) _______ ...
OXIDATION OF CYCLOHEXANOL TO CYCLOHEXANONE The
... wise using pasteur pipette very time consuming more than likely rushed although temperature mixture during addition remained desired excess beaker would further oxidize undesired short collection time during steam distillation accounts greatest amount loss continued collection long temperature remai ...
... wise using pasteur pipette very time consuming more than likely rushed although temperature mixture during addition remained desired excess beaker would further oxidize undesired short collection time during steam distillation accounts greatest amount loss continued collection long temperature remai ...
Physical and Chemical equilibrium
... Where K2 and K1 are equilibrium constant at temperature T2 and T1 respectively ∆HO is the enthalpy of reaction and R is the gas constant If ∆HO = 0, no heat is absorbed or evolved in the reaction ...
... Where K2 and K1 are equilibrium constant at temperature T2 and T1 respectively ∆HO is the enthalpy of reaction and R is the gas constant If ∆HO = 0, no heat is absorbed or evolved in the reaction ...
CHEMISTRY REVISION GUIDE for CIE IGCSE Coordinated Science
... example, ‘O2‘ means there is one oxygen molecule involved in a reaction but ‘2O2’ would mean there are two. Example:. CH4(g) + O2(g) CO2)g) + H2O(g)* This is unbalanced as there are 4 ‘H’ on the left but only 2 ‘H’ on the right. This must be corrected by placing a ‘2’ in front of the ‘H2O’ so ther ...
... example, ‘O2‘ means there is one oxygen molecule involved in a reaction but ‘2O2’ would mean there are two. Example:. CH4(g) + O2(g) CO2)g) + H2O(g)* This is unbalanced as there are 4 ‘H’ on the left but only 2 ‘H’ on the right. This must be corrected by placing a ‘2’ in front of the ‘H2O’ so ther ...
Table of contents
... log(m∗10n )≈n . 1+m pKa = pKa=−log( K a ) • Ka = equilibrium constant for a weak acid donating a proton in water to form its conjugate base pKb = pKb=−log( K b ) • Kb = equilibrium constant for a weak base accepting a proton from water to form its conjugate acid Kw/Ka/Kb relationship = K w =K a∗K b ...
... log(m∗10n )≈n . 1+m pKa = pKa=−log( K a ) • Ka = equilibrium constant for a weak acid donating a proton in water to form its conjugate base pKb = pKb=−log( K b ) • Kb = equilibrium constant for a weak base accepting a proton from water to form its conjugate acid Kw/Ka/Kb relationship = K w =K a∗K b ...
Document
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
... An acid is a substance that, when dissolved in water, ionizes and increases the concentration of hydrogen ions, H+. HCl → H+ + Cl A base is a substance that, when dissolved in water, increases the concentration of hydroxide ions, OH-. But, Not all bases contain OHNaOH → Na+ + OH- ...
Expt 3-2 Freezing Point Depression
... After the Arrhenius theory of ionization of salts in aqueous solutions became accepted, comparisons were made of experimental values of colligative properties (ΔTF, osmotic pressure, etc) of aqueous salt solutions with the values expected if the salts were completely dissoc ...
... After the Arrhenius theory of ionization of salts in aqueous solutions became accepted, comparisons were made of experimental values of colligative properties (ΔTF, osmotic pressure, etc) of aqueous salt solutions with the values expected if the salts were completely dissoc ...
CLASS X carbon and its compound
... A reaction which proceeds with the breaking of double or triple covalent bonds in organic compounds, so as to form new organic compounds having single covalent bond, is called addition reaction. The conversion of unsaturated vegetable oil into saturated vegetable oil by the absorption of hydrogen in ...
... A reaction which proceeds with the breaking of double or triple covalent bonds in organic compounds, so as to form new organic compounds having single covalent bond, is called addition reaction. The conversion of unsaturated vegetable oil into saturated vegetable oil by the absorption of hydrogen in ...
1994 AP Chemistry Multiple Choice
... Reproductions of these examination questions by classroom teachers is permitted for face-to-face teaching purposes only. ...
... Reproductions of these examination questions by classroom teachers is permitted for face-to-face teaching purposes only. ...
STOICHIOMETRY:
... The word stoichiometry derives from two Greek words: stoicheion (meaning "element") and metron (meaning "measure"). Stoichiometry deals with calculations about the masses, volumes or concentrations of reactants and products involved in a chemical reaction. The reason we balance chemical reactions is ...
... The word stoichiometry derives from two Greek words: stoicheion (meaning "element") and metron (meaning "measure"). Stoichiometry deals with calculations about the masses, volumes or concentrations of reactants and products involved in a chemical reaction. The reason we balance chemical reactions is ...
PRACTICE FINAL EXAM CHEMISTRY 152 This
... If 1.00 mol A2 and 1.00 mol B2 are introduced into an empty 4.00 L container, find the equilibrium concentration of AB at 400C. [a] 0.03 M ...
... If 1.00 mol A2 and 1.00 mol B2 are introduced into an empty 4.00 L container, find the equilibrium concentration of AB at 400C. [a] 0.03 M ...
CHEM110P1_06_2015_Y_P1
... is 0.9968 g cm–3.) Assuming that the ideal gas equation applies, determine the molar mass of the unknown gas and its identity. (The unknown gas is one of the following: NH3, CO2, CS2, ...
... is 0.9968 g cm–3.) Assuming that the ideal gas equation applies, determine the molar mass of the unknown gas and its identity. (The unknown gas is one of the following: NH3, CO2, CS2, ...
Chemical equilibrium
... equilibrium constant becomes the reciprocal of the original equilibrium constant. ...
... equilibrium constant becomes the reciprocal of the original equilibrium constant. ...
Chemical Equilibrium Stress? What stress? 1
... 2 H2O (l) 2 H2 (g) + O2 (g) The concentration of a pure liquid cannot change, it is fixed and equal to the liquid’s K = [H2]2 [O2] density. [H2O]2 We know that K remains constant for all combinations of reactant and product K[H2O]2 = [H2]2 [O2] = K concentrations at equilibrium. Therefore, ...
... 2 H2O (l) 2 H2 (g) + O2 (g) The concentration of a pure liquid cannot change, it is fixed and equal to the liquid’s K = [H2]2 [O2] density. [H2O]2 We know that K remains constant for all combinations of reactant and product K[H2O]2 = [H2]2 [O2] = K concentrations at equilibrium. Therefore, ...
C3 Revision Question Booklet
... A student carried out a titration to find the concentration of a solution of hydrochloric acid. The following paragraph was taken from the student’s notebook. I filled a burette with hydrochloric acid. 25.0 cm3 of 0.40 mol/dm3 potassium hydroxide was added to a flask. 5 drops of indicator were added ...
... A student carried out a titration to find the concentration of a solution of hydrochloric acid. The following paragraph was taken from the student’s notebook. I filled a burette with hydrochloric acid. 25.0 cm3 of 0.40 mol/dm3 potassium hydroxide was added to a flask. 5 drops of indicator were added ...
Chapter 19: Acids and Bases
... contain a hydroxide group, yet ammonia produces hydroxide ions in solution and is a well known base. Clearly, a model that includes all bases is needed. The Brønsted-Lowry model The Danish chemist Johannes Brønsted and the English chemist Thomas Lowry independently proposed a more inclusive model of ...
... contain a hydroxide group, yet ammonia produces hydroxide ions in solution and is a well known base. Clearly, a model that includes all bases is needed. The Brønsted-Lowry model The Danish chemist Johannes Brønsted and the English chemist Thomas Lowry independently proposed a more inclusive model of ...
Exam Review Chapter 18-Equilibrium
... 6. What is the effect of adding more CO2 to the following equilibrium reaction? CO2 + H2O↔ H2CO3 a. More H2CO3 is produced. b. More H2O is produced. c. The equilibrium d. No Change 7. Two opposing reactions (A + B ↔C + D) occurring simultaneously at the same rate is an example of: a. reversibility. ...
... 6. What is the effect of adding more CO2 to the following equilibrium reaction? CO2 + H2O↔ H2CO3 a. More H2CO3 is produced. b. More H2O is produced. c. The equilibrium d. No Change 7. Two opposing reactions (A + B ↔C + D) occurring simultaneously at the same rate is an example of: a. reversibility. ...
Chemistry II Exams and Keys Corrected 2016 Season
... formulas, chemical equations (precipitation reactions, ionic equations, solubility, acid-base reactions, gas forming reactions, oxidation reduction reactions, balancing redox reactions by oxidation state method, activity series, mole relationships, massmass problems¸ stoichiometry of redox solutions ...
... formulas, chemical equations (precipitation reactions, ionic equations, solubility, acid-base reactions, gas forming reactions, oxidation reduction reactions, balancing redox reactions by oxidation state method, activity series, mole relationships, massmass problems¸ stoichiometry of redox solutions ...
The Uptake of Methyl Vinyl Ketone
... volumes (Vliq ) 0.05-2 mL) of water or sulfuric acid solutions were placed in the inner cylinder and rotated (1-5 rpm) in order to maintain a thin film on the wall (∼ 0.02 cm thick for 2 mL of solution). Mixing and saturation of the solutions and wetting of the wall were facilitated by the presence ...
... volumes (Vliq ) 0.05-2 mL) of water or sulfuric acid solutions were placed in the inner cylinder and rotated (1-5 rpm) in order to maintain a thin film on the wall (∼ 0.02 cm thick for 2 mL of solution). Mixing and saturation of the solutions and wetting of the wall were facilitated by the presence ...
VALIDITY OF HENRY`S LAW IN DILUTE SOLUTIONS (l)
... equality B'jB" P"" Kx results in a negligible change in Kx with changing y" in the dilute solution concentration range. This means that the validity of ...
... equality B'jB" P"" Kx results in a negligible change in Kx with changing y" in the dilute solution concentration range. This means that the validity of ...
Common Student Misconceptions
... Solubility guidelines for common ionic compounds in water: • Compounds containing alkali metal ions or ammonium ion are soluble. • Compounds containing NO3– or C2H3O2– are soluble. • Compounds containing Cl–, Br– or I– are soluble. • Exceptions: Compounds of Ag+, Hg22+, and Pb2+. • Compounds contain ...
... Solubility guidelines for common ionic compounds in water: • Compounds containing alkali metal ions or ammonium ion are soluble. • Compounds containing NO3– or C2H3O2– are soluble. • Compounds containing Cl–, Br– or I– are soluble. • Exceptions: Compounds of Ag+, Hg22+, and Pb2+. • Compounds contain ...
Characterization of Alcohol Solvents by the Empirical Polarity
... (R — 0.978). which is in fair agreement with the results reported by Reichardt. mination of E T (30) instead of A N or Z is to be Table II presents some new Z and ET(30) values preferred for the following reasons: (i) ET(30) vafor ethanol differently substituted in 2-position and lues are obtained m ...
... (R — 0.978). which is in fair agreement with the results reported by Reichardt. mination of E T (30) instead of A N or Z is to be Table II presents some new Z and ET(30) values preferred for the following reasons: (i) ET(30) vafor ethanol differently substituted in 2-position and lues are obtained m ...