1. Consider the following hypothetical reaction: A+B ---> C

Calculate the average rate of the reaction on the basis of the following information:

a) Pure A and B are mixed, and after 120 minutes the measured concentration of C is 0.396 mol/lL

b) Pure A, B, and C are mixed together at equal concentrations of 0.300 M. After 8.00 minutes, the concentration of C is found to be 0.455 M.

2. For the decomposition reaction X-----> Y + Z, the reaction is first-order with respect to X, and the value of the specific rate constant is 0.0296/s. Calculate the

initial reaction rate when starting with the following concentrations of X.

2.[X] = 0.410 M

b. [X] = 0.0223 M

3. In the following reaction: 2Ca + O2 ---> 2CaO. 1g of calcium is oxidized. the reaction takes 10 minutes to reach completion. what is the rate of the formation of CaO.

4. 10g of Mg reacts with 0.15 mol/dm3 solution of HCl at a temperature of 25C.

(a) write a balanced chemical equation for the reaction

(b) State two ways of increasing the average rate of production of H2(g)

.