Types of Reactions
... • The double arrow means that the reaction is significant in both directions. • It indicates that there is a balance between the forward and reverse reactions. • This balance produces a state of chemical equilibrium. ...
... • The double arrow means that the reaction is significant in both directions. • It indicates that there is a balance between the forward and reverse reactions. • This balance produces a state of chemical equilibrium. ...
1984 Advanced Placement Exam
... figuration shown above. The compound most boiling points given above. The relatively high likely formed with magnesium, Mg, is boiling point of HF can be correctly explained (A) MgX (C) MgX2 (E) Mg3X2 by which of the following? (B) Mg2X (D) MgX3 (A) HF gas is more ideal. (B) HF is the strongest acid ...
... figuration shown above. The compound most boiling points given above. The relatively high likely formed with magnesium, Mg, is boiling point of HF can be correctly explained (A) MgX (C) MgX2 (E) Mg3X2 by which of the following? (B) Mg2X (D) MgX3 (A) HF gas is more ideal. (B) HF is the strongest acid ...
Class XII Chemistry IMPORTANT QUESTIONS and COMMON
... 6.What is the effect of rise in temperature on solubility of gases? Ans.Dissolution of gas is exothermic process. Hence according to LeChatelier‘s principle, the solubility of gas should decrease with rise in temperature 7. Mention a large scale use of the phenomenon called ‘reverse osmosis’. Ans. ...
... 6.What is the effect of rise in temperature on solubility of gases? Ans.Dissolution of gas is exothermic process. Hence according to LeChatelier‘s principle, the solubility of gas should decrease with rise in temperature 7. Mention a large scale use of the phenomenon called ‘reverse osmosis’. Ans. ...
1 Unit 11-12: Equilibrium and Acid/Bases Notes Colligative
... 8. Which change may occur when a catalyst is added to a reaction system? a. activation energy for the reaction decreases b. the heat of the reaction decreases c. the potential energy of the reactants increases d. the potential energy of the products decreases ...
... 8. Which change may occur when a catalyst is added to a reaction system? a. activation energy for the reaction decreases b. the heat of the reaction decreases c. the potential energy of the reactants increases d. the potential energy of the products decreases ...
THE ALKALI FELDSPARS VI. SANIDINE AND ORTHOCLASE
... are given in Table 4. Unlike the felsite, the granophyrecontains amphibole as the dominant mafic mineral;biotite also occurswhile magnetite. apatite, zircon and orthite are present in accessoryamounts. Texturally the groundmassmay vary from a granophyric intergrowth of quartz, turbid alkali feldspar ...
... are given in Table 4. Unlike the felsite, the granophyrecontains amphibole as the dominant mafic mineral;biotite also occurswhile magnetite. apatite, zircon and orthite are present in accessoryamounts. Texturally the groundmassmay vary from a granophyric intergrowth of quartz, turbid alkali feldspar ...
File - Ms. Lefkowitz
... Base your answer to questions 19 and 20 on the diagram below and the mineral chart. The diagram below shows the results of three different physical tests A, B and C, that were performed on a mineral. 19. The luster of this mineral could be determined by: A) using an electronic balance B) using a gra ...
... Base your answer to questions 19 and 20 on the diagram below and the mineral chart. The diagram below shows the results of three different physical tests A, B and C, that were performed on a mineral. 19. The luster of this mineral could be determined by: A) using an electronic balance B) using a gra ...
1970 - 2005 Solids/Liquids/Solutions FRQs
... what changes, if any, occur to bring the system to equi1 kg water = 55.6 mol water librium. ...
... what changes, if any, occur to bring the system to equi1 kg water = 55.6 mol water librium. ...
Minerals
... • The “shininess” or lustre, of a mineral depends on how the light is reflected from its surface • Shiny surface are said to have “metallic” lustre while dull surfaces are said to have non-metallic lustre ...
... • The “shininess” or lustre, of a mineral depends on how the light is reflected from its surface • Shiny surface are said to have “metallic” lustre while dull surfaces are said to have non-metallic lustre ...
CHEM 102 FINAL EXAM WINTER 07-08
... and of N2O, 1.60 × 10-19 atm. What is the value of the equilibrium constant Kp? a. 6.02 × 10-20 b. 8.24 × 10-39 c. 9.00 × 10-38 d. 1.27 × 10-18 ANSWER: b 15. To decide whether a reaction mixture is at equilibrium, a student determines the value of Q, the reaction quotient, and finds that it is less ...
... and of N2O, 1.60 × 10-19 atm. What is the value of the equilibrium constant Kp? a. 6.02 × 10-20 b. 8.24 × 10-39 c. 9.00 × 10-38 d. 1.27 × 10-18 ANSWER: b 15. To decide whether a reaction mixture is at equilibrium, a student determines the value of Q, the reaction quotient, and finds that it is less ...
Chemical Reactions Q3U3
... amount of solute per solution, the solution can not dissolve any more solute Unsaturated solution: The amount of solute dissolved is less than the amount of solute than can be dissolved, the solvent can dissolve more solute Supersaturated solution: Unstable solutions which contain more dissolved ...
... amount of solute per solution, the solution can not dissolve any more solute Unsaturated solution: The amount of solute dissolved is less than the amount of solute than can be dissolved, the solvent can dissolve more solute Supersaturated solution: Unstable solutions which contain more dissolved ...
No Slide Title
... Al2(SO4)3(aq) + 6NaOH(aq) → 2Al(OH)3(s) + 3Na2SO4(aq) *Do not carry the subscripts over (except for polyatomic ions) 2. Write the ionic equation showing the soluble product dissociated into ions, but the insoluble product left together. 2Al+3 + 3SO4-2 + 6Na+ + 6OH- → 2Al(OH)3(s) + 6Na+ + 3SO4-2 3. C ...
... Al2(SO4)3(aq) + 6NaOH(aq) → 2Al(OH)3(s) + 3Na2SO4(aq) *Do not carry the subscripts over (except for polyatomic ions) 2. Write the ionic equation showing the soluble product dissociated into ions, but the insoluble product left together. 2Al+3 + 3SO4-2 + 6Na+ + 6OH- → 2Al(OH)3(s) + 6Na+ + 3SO4-2 3. C ...
05 Halogen deriv. of hydrocarbons. Alcohols,ethers, esters
... Various alcohols have been used as antiseptics and disinfectants. Antibacterial potencies of primary alcohols increase with molecular weight up to C8. Beyond this point, water solubility is less than the minimum effective concentration, and the apparent potency decreases with molecular weight. Branc ...
... Various alcohols have been used as antiseptics and disinfectants. Antibacterial potencies of primary alcohols increase with molecular weight up to C8. Beyond this point, water solubility is less than the minimum effective concentration, and the apparent potency decreases with molecular weight. Branc ...
Using APL format - Massachusetts Institute of Technology
... of over 8% even for Si:SiO2 contrast 共⑀⫽12:2兲; the PBG persists down to ⑀ contrasts of 4:1 共2:1 index contrast兲. The vertical transmission through roughly one period 共three layers plus a hole slab兲 of the structure, shown in Fig. 3共b兲, is attenuated by about 20 dB in the gap. Considered individually ...
... of over 8% even for Si:SiO2 contrast 共⑀⫽12:2兲; the PBG persists down to ⑀ contrasts of 4:1 共2:1 index contrast兲. The vertical transmission through roughly one period 共three layers plus a hole slab兲 of the structure, shown in Fig. 3共b兲, is attenuated by about 20 dB in the gap. Considered individually ...
Saturday Study Session 1 1st Class Reactions
... A 0.50 M solution of sodium chloride in an open beaker sits on a lab bench. Which of the following would decrease the concentration of the salt solution? a) Add water to the solution. b) Pour some of the solution down the sink drain. c) Add more sodium chloride to the solution. d) Let the solution ...
... A 0.50 M solution of sodium chloride in an open beaker sits on a lab bench. Which of the following would decrease the concentration of the salt solution? a) Add water to the solution. b) Pour some of the solution down the sink drain. c) Add more sodium chloride to the solution. d) Let the solution ...
Minerals - Miss Rudisill`s Webpage
... c) Atoms move close together and form compounds d)Types of minerals that form depend on the type and amount of elements in the magma e) Cooling time determines size of minerals Long cooling time = large minerals Short cooling time = small minerals ...
... c) Atoms move close together and form compounds d)Types of minerals that form depend on the type and amount of elements in the magma e) Cooling time determines size of minerals Long cooling time = large minerals Short cooling time = small minerals ...
Chemistry 12 - hrsbstaff.ednet.ns.ca
... 2. A 10.0 g sample of a substance has 34.8 J of energy added to it and its temperature increases by 25.0°C. What is the specific heat capacity of the substance? A. 0.139 J/g°C B. 0.338 J/g°C C. 0.718 J/g°C D. 0.870 J/g°C 3. If the ΔH for a reaction is positive, which of the following statements is t ...
... 2. A 10.0 g sample of a substance has 34.8 J of energy added to it and its temperature increases by 25.0°C. What is the specific heat capacity of the substance? A. 0.139 J/g°C B. 0.338 J/g°C C. 0.718 J/g°C D. 0.870 J/g°C 3. If the ΔH for a reaction is positive, which of the following statements is t ...
Physical Chemistry II
... physical equilibrium among the phases of one or more pure substances under different conditions of temperature and pressure. In electrochemistry, we focus on chemical systems that involve the transfer of electrons or charged species i.e. oxidation – reduction reaction s.. Nuclear chemistry looks at ...
... physical equilibrium among the phases of one or more pure substances under different conditions of temperature and pressure. In electrochemistry, we focus on chemical systems that involve the transfer of electrons or charged species i.e. oxidation – reduction reaction s.. Nuclear chemistry looks at ...
C - Thierry Karsenti
... chemical reaction to occur, molecules must come into contact. Solutions allow intimate contact of molecules of different types thereby facilitating chemical reactions. The study of solutions is important as most reaction, be it in the laboratory, industry or life systems take place in solution. They ...
... chemical reaction to occur, molecules must come into contact. Solutions allow intimate contact of molecules of different types thereby facilitating chemical reactions. The study of solutions is important as most reaction, be it in the laboratory, industry or life systems take place in solution. They ...
Physical Chemistry 2.pdf
... The module, Physical Chemistry 2, focuses on five (5) areas of physical chemistry important to many aspects of our lives: solutions, colloids, phase equilibrium, electrochemistry and nuclear chemistry. Solutions are often necessary to facilitate many chemical reactions in life processes or industry ...
... The module, Physical Chemistry 2, focuses on five (5) areas of physical chemistry important to many aspects of our lives: solutions, colloids, phase equilibrium, electrochemistry and nuclear chemistry. Solutions are often necessary to facilitate many chemical reactions in life processes or industry ...
Lab Handout
... As you know, light is an electromagnetic wave; we can think of it as a vibrating electromagnetic field. In general, the vibration can be in any direction perpendicular to the direction of travel. Some materials, and many minerals in particular, transmit only that part of light that is vibrating in p ...
... As you know, light is an electromagnetic wave; we can think of it as a vibrating electromagnetic field. In general, the vibration can be in any direction perpendicular to the direction of travel. Some materials, and many minerals in particular, transmit only that part of light that is vibrating in p ...
Novel optical phenomena with photonic crystals
... band-edge operation. Because the third band exhibits negative group velocity (k · ∂ω/∂k) the 3D crystal may be regarded as having an effective index nef f less than −1. However, since there is only one band in this frequency range in full 3D, the refraction phenomena will be strongly polarization dep ...
... band-edge operation. Because the third band exhibits negative group velocity (k · ∂ω/∂k) the 3D crystal may be regarded as having an effective index nef f less than −1. However, since there is only one band in this frequency range in full 3D, the refraction phenomena will be strongly polarization dep ...
Magnitude and nature of the quadratic electro
... field of a frequency in the range dc to ⬃500 Hz. To explain the spread, it had been suggested previously that in certain cases the theoretical conditions forbidding the existence of the linear electro-optic effect were not precisely realized in practice; thus the measured response was due to both th ...
... field of a frequency in the range dc to ⬃500 Hz. To explain the spread, it had been suggested previously that in certain cases the theoretical conditions forbidding the existence of the linear electro-optic effect were not precisely realized in practice; thus the measured response was due to both th ...
mineral identification
... Crystal form is the shape taken by a mineral when it is allowed to develop in favorable conditions. All minerals have a crystal form, but some will develop crystals in only very specific conditions. While the crystal form is very characteristic for any given mineral, it is one of the more difficu ...
... Crystal form is the shape taken by a mineral when it is allowed to develop in favorable conditions. All minerals have a crystal form, but some will develop crystals in only very specific conditions. While the crystal form is very characteristic for any given mineral, it is one of the more difficu ...
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 ...
Thermo notes Part II
... Enthalpy and entropy can sometimes reinforce each other – this makes the reaction really go or really not go. Ex. Dynamite has a neg Δ H & a pos Δ S so the rxn really goes once started… If the signs don’t reinforce does a rxn occur? This is where Gibbs Free energy addresses the spontaneity of rxns. ...
... Enthalpy and entropy can sometimes reinforce each other – this makes the reaction really go or really not go. Ex. Dynamite has a neg Δ H & a pos Δ S so the rxn really goes once started… If the signs don’t reinforce does a rxn occur? This is where Gibbs Free energy addresses the spontaneity of rxns. ...
Crystallization
Crystallization is the (natural or artificial) process of formation of solid crystals precipitating from a solution, melt or more rarely deposited directly from a gas. Crystallization is also a chemical solid–liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs. In chemical engineering crystallization occurs in a crystallizer. Crystallization is therefore an aspect of precipitation, obtained through a variation of the solubility conditions of the solute in the solvent, as compared to precipitation due to chemical reaction.