Question

1. The decomposition reaction of A to B has a rate constant of 2.17×10^-4 s^-1:
        A → 2B
How long will it take for the concentration of A to decrease by 24.2%? (answers given in minutes)

2. Calculate the rate constant for a first order reaction that has half-life equal to 530 s.

3. For the reaction A₂ + B₂ → 2AB, E_a(fwd) = 303 kJ/mol and E_a(rev) = 34 kJ/mol. Assuming the reaction occurs in one step, calculate ΔH°_rxn

_{Please answer all three questions}

Answer 1