Fall 2012
... 10. The pictures on the right represent aqueous solutions of three acids HA (A = X, Y, or Z), with water molecules omitted for clarity. Unshaded spheres represent hydrogen atoms or ions and gray spheres represent A atoms or ions. Which of the three is the strongest acid? a. ...
... 10. The pictures on the right represent aqueous solutions of three acids HA (A = X, Y, or Z), with water molecules omitted for clarity. Unshaded spheres represent hydrogen atoms or ions and gray spheres represent A atoms or ions. Which of the three is the strongest acid? a. ...
Review Answers - cloudfront.net
... a. What is the sign of ΔS° for the reaction? Explain. Since you are going from one mole of a gas to two moles of a gas this system is getting more disordered and therefore entropy is increased. ΔS° is positive b. What change, if any, will occur in ΔG° for the reaction as the temperature is increased ...
... a. What is the sign of ΔS° for the reaction? Explain. Since you are going from one mole of a gas to two moles of a gas this system is getting more disordered and therefore entropy is increased. ΔS° is positive b. What change, if any, will occur in ΔG° for the reaction as the temperature is increased ...
SCH4U Exam Review
... 7. A 0.100 mol sample of formaldehyde vapour, CH2O, was placed in a heated 1.00 L vessel and some of it decomposed. The reaction is: CH2O(g) H2 (g) + CO(g) At equilibrium, the CH2O(g) concentration was 0.080 mol/L. Calculate Keq. ANS: 5.0x10-3 8. The equilibrium constant for the reaction: SO3 (g) ...
... 7. A 0.100 mol sample of formaldehyde vapour, CH2O, was placed in a heated 1.00 L vessel and some of it decomposed. The reaction is: CH2O(g) H2 (g) + CO(g) At equilibrium, the CH2O(g) concentration was 0.080 mol/L. Calculate Keq. ANS: 5.0x10-3 8. The equilibrium constant for the reaction: SO3 (g) ...
AP Chemistry Chapter 16
... 16.8 Free Energy and Equilibrium -equilibrium point occurs at the lowest value of free energy available to the reaction system -when the system has reached equilibrium, the system has reached minimum free energy or the free energy of the reactants is equal to the free energy of the products ( G = ...
... 16.8 Free Energy and Equilibrium -equilibrium point occurs at the lowest value of free energy available to the reaction system -when the system has reached equilibrium, the system has reached minimum free energy or the free energy of the reactants is equal to the free energy of the products ( G = ...
Chapter 10 Chemical Reactions
... Example: Predict the products for Zn(s) + HCl(aq) ??? 1. Check the activity series between Zn and H. Find out that Zn is more active than H. 2. Thus the Zn wants to have a friend. Note that metals bond with negatively charged nonmetals. Thus the friend will be Cl and not H because Cl is -1 charged ...
... Example: Predict the products for Zn(s) + HCl(aq) ??? 1. Check the activity series between Zn and H. Find out that Zn is more active than H. 2. Thus the Zn wants to have a friend. Note that metals bond with negatively charged nonmetals. Thus the friend will be Cl and not H because Cl is -1 charged ...
Buffer Capacity
... About the only time a buffer solution is used in its pure state, without any threat to its composition and, therefore pH value, is in standardizing a pH meter. The immersion of a glass electrode does not contaminate the buffer in the slightest, so the pH is completely unaffected. Most of the time bu ...
... About the only time a buffer solution is used in its pure state, without any threat to its composition and, therefore pH value, is in standardizing a pH meter. The immersion of a glass electrode does not contaminate the buffer in the slightest, so the pH is completely unaffected. Most of the time bu ...
Detection of Organic Pollutants with a Pulsed Ion Mobility
... with increasing concentration while the monomer peaks increase until the dimer peaks appear, and then lose intensity while the dimer peaks increase in intensity). The lower spectrum shows the decay behavior when introducing a delay time between ion production and detection. In the positve mode the R ...
... with increasing concentration while the monomer peaks increase until the dimer peaks appear, and then lose intensity while the dimer peaks increase in intensity). The lower spectrum shows the decay behavior when introducing a delay time between ion production and detection. In the positve mode the R ...
CHEMICAL KINETICS
... Enantiomers have identical atoms and bonds, but the two different forms have different optical properties. If plane polarized light is passed through a solution of a chiral compound. the plane of polarization of the light is rotated either clockwise or counterclockwise. The extent of this rotation d ...
... Enantiomers have identical atoms and bonds, but the two different forms have different optical properties. If plane polarized light is passed through a solution of a chiral compound. the plane of polarization of the light is rotated either clockwise or counterclockwise. The extent of this rotation d ...
AP Chemistry Review Preparing for the AP
... Focus on your weakest areas; it is doubtful you can do/know everything. The AP Chemistry Exam is designed so that it is impossible to know absolutely everything on it (in case you haven’t noticed). I might as well place the biggest two at the start – You need to review your incorrect MC from the Pra ...
... Focus on your weakest areas; it is doubtful you can do/know everything. The AP Chemistry Exam is designed so that it is impossible to know absolutely everything on it (in case you haven’t noticed). I might as well place the biggest two at the start – You need to review your incorrect MC from the Pra ...
Chem 1B Fa2015 FinalExam Review
... The overall reactions in the Oswald process for the production of nitric acid can be summarized as follows: __ NH3(g) + __ O2(g) + __ H2O(l) __ HNO3(aq) + __ NO(g) + __ H2O(g) (a) Balance the above equation using the smallest integer coefficients. (b) If concentrated nitric acid contains 70.0% (by ...
... The overall reactions in the Oswald process for the production of nitric acid can be summarized as follows: __ NH3(g) + __ O2(g) + __ H2O(l) __ HNO3(aq) + __ NO(g) + __ H2O(g) (a) Balance the above equation using the smallest integer coefficients. (b) If concentrated nitric acid contains 70.0% (by ...
Calculating molar volume
... Example: 976 cm3 of oxygen was found to have a mass of 1.3g Calculate the molar volume of oxygen under these conditions: Remember that the molar volume is the volume occupied by one mole of oxygen, O2. GFM of oxygen, O2, is 32.0g Answer: 23.8 l is the volume of 32.0g of O2. So the molar volume of ox ...
... Example: 976 cm3 of oxygen was found to have a mass of 1.3g Calculate the molar volume of oxygen under these conditions: Remember that the molar volume is the volume occupied by one mole of oxygen, O2. GFM of oxygen, O2, is 32.0g Answer: 23.8 l is the volume of 32.0g of O2. So the molar volume of ox ...
Chapter 14
... mol/L, it takes __________ s for the concentration to decrease to 0.11 mol/L. A) 0.017 B) 0.68 C) 9.1 D) 40. E) 5.2 Chapter 15 Chemical Equilibrium 1) At equilibrium, __________. A) all chemical reactions have ceased B) the rates of the forward and reverse reactions are equal C) the rate constants o ...
... mol/L, it takes __________ s for the concentration to decrease to 0.11 mol/L. A) 0.017 B) 0.68 C) 9.1 D) 40. E) 5.2 Chapter 15 Chemical Equilibrium 1) At equilibrium, __________. A) all chemical reactions have ceased B) the rates of the forward and reverse reactions are equal C) the rate constants o ...
Name: Period:______ Let`s make some sandwiches! Introduction: If
... Name:______________________ Period:_________ Let’s make some sandwiches! Introduction: If a sandwich shop runs out of bread, the shop closes down. No more sandwiches can be fully made without ordering more bread from a bakery. A similar thing happens in a chemical reaction. If there are fixed amount ...
... Name:______________________ Period:_________ Let’s make some sandwiches! Introduction: If a sandwich shop runs out of bread, the shop closes down. No more sandwiches can be fully made without ordering more bread from a bakery. A similar thing happens in a chemical reaction. If there are fixed amount ...
Solution
... where it is understood that the respective activities are equilibrium values. According to Equation 5.37, dissolution of one mole of salt yields y moles of cations and z moles of anions. Let C represent the solubility of the salt M yAz in pure water, e.g., the moles of salt which dissolve to give on ...
... where it is understood that the respective activities are equilibrium values. According to Equation 5.37, dissolution of one mole of salt yields y moles of cations and z moles of anions. Let C represent the solubility of the salt M yAz in pure water, e.g., the moles of salt which dissolve to give on ...
