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Chapter 2 Discussion Section Problems

Chapter 2 Discussion Section Problems - Chapter 8...

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Chapter 2 Discussion Section Problems Thermodynamics Problems 1. The following reaction has a value of G o = -2.1 kJ/mol (-0.5kCal/mol) CH 3 Br + H 2 S CH 3 SH + HBr a. Calculate the K eq value at T=25C for the reaction b. Starting with a 1M solution of CH 3 Br and H 2 S calculate the final concentrations of all four species at equilibrium. 2. For each reaction, predict whether S o will be positive, negative, or impossible to predict. a. C 10 H 22 C 6 H 6 + C 7 H 16 b. 2CH 3 COCH 3 + -OH CH 3 – CO – CH 2 – C(OH)(CH 3 ) 2 c. CH 3 COCH 3 + CH 3 OH + H + CH 3 COOCH 3 + H 2 O 3. Chloromethane reacts with dilute sodium cyanide (Na+ -C≡N) according to the following equation: CH 3 – Cl + - C≡N CH 3 C≡N + Cl - When the concentration of chloromethane is doubled, the rate is observed to double. When the concentration of cyanide ion is tripled, the rate is observed to triple. a. What is the kinetic order with respect to chloromethane? b. What is the kinetic order with respect to cyanide ion? c. What is the kinetic order overall?
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