Question

1) The volume of the system is increased for each of the following reactions below. Explain

whether each system would shift forward, in reverse, or stay the same (no effect) and give brief

explanation for your answer.

(a) 2 SO2 (g) + O2 (g) <-- --> 2 SO3 (g)

(b) H2 (g) + I2 (g) <-- --> 2HI (g)

(c) CaCO3 (g) <-- --> CaO (s) + CO2 (g)

(d) Ag+ (aq) + Cl- (aq) <-- --> AgCl (s)

2) In each of the following reactions below, indicate whether the temperature should be

increased or decreased to force the reaction in the reverse direction and give a brief explanation

for your answer.

(a) H2 (g) + CO2 (g) <-- --> H2O (g) + CO (g) ∆Hrxn = +41.0 kJ

(b) 2 SO2 (g) + O2 (g) <-- --> 2 SO3 (g) ∆Hrxn = -198 kJ

3) For each reaction in question 3, would the value of Keq increase or decrease if the temperature

were decreased. Give brief explanation for your answer choice.

Answer 1