5 Steps to a 5 AP Chemistry 2019
120 ❯ STEP 4. Review the Knowledge You Need to Score High (c) At STP, the volume of 1 mol of O 2 should be 22.4 L. The volume is ...
Gases ❮ 121 ● Graham’s law—The lower the molecular mass of a gas, the faster it will effuse/diffuse. Know how to use Graham’s la ...
CHAPTER 122 ❯ 9 Thermodynamics IN THIS CHAPTER Summary: Thermodynamics is the study of heat and its transformations. Thermochemi ...
Thermodynamics ❮ 123 DH° = S DHf° products - S DHf° reactants DG° = S DGf° products - S DGf° reactants DG° = DH° - TDS° = - RT I ...
124 ❯ STEP 4. Review the Knowledge You Need to Score High Substituting the mathematical relationship for q gives: (csolid × mso ...
Thermodynamics ❮ 125 This is not molar (yet) (1.5886g) =×− (1mol) (180.16g) 8.8177 10 mol^3 Thus: − × − =− 28.52kJ 8.8177 10 mol ...
126 ❯ STEP 4. Review the Knowledge You Need to Score High If the previous reaction for the formation of water were reversed, the ...
Thermodynamics ❮ 127 TIP In using this equation be sure to consider the number of moles of each, because DHf° for the individual ...
128 ❯ STEP 4. Review the Knowledge You Need to Score High c. CaSO 4 H 2 O CO 2 CaCO 3 H 2 SO 4 [107 + 188.7 + 213.6] - [92.9 + 1 ...
Thermodynamics ❮ 129 [-750.2 + (-237.2) + 2(-16.6)] - [2(-203.9) + (-604.2)] = - 8.6 kJ/mole b. C 2 H 5 OH(l) C 2 H 4 (g) H 2 O( ...
130 ❯ STEP 4. Review the Knowledge You Need to Score High Note: ° = 298 K Answer: ∆°=− = − × =− × GRTKln (8.314J) (molK) (298 K) ...
Thermodynamics ❮ 131 Which of the following is the minimum energy required to initiate a reaction? (A) free energy (B) lattice ...
132 ❯ STEP 4. Review the Knowledge You Need to Score High When ammonium chloride dissolves in water, the temperature drops. Whi ...
Thermodynamics ❮ 133 The temperature increases when lithium sulfate, Li 2 SO 4 , dissolves in water. Which of the follow- ing c ...
134 ❯ STEP 4. Review the Knowledge You Need to Score High ❯ Answers and Explanations D—You may wish to review the Kinetics chap ...
Thermodynamics ❮ 135 ❯ Free-Response Question You have 10 minutes to answer the following question. You may use a calculator and ...
136 ❯ STEP 4. Review the Knowledge You Need to Score High ❯ Answer and Explanation (a) The value is negative. The decrease in th ...
Thermodynamics ❮ 137 ❯ Rapid Review ● Thermodynamics is the study of heat and its transformations. ● Kinetic energy is energy of ...
CHAPTER Spectroscopy, Light, and Electrons IN THIS CHAPTER Summary: In developing the model of the atom, it was thought initiall ...
Spectroscopy, Light, and Electrons ❮ 139 The energy of the electromagnetic spectrum moves through space as waves that have three ...
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