H. The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1:

2NO(g) + O2(g) --> N2O4(g)

a) Write the rate law for this reaction.

b) What is the rate of the reaction when [NO] = 0.125 M and [O2]=0.250 M?

c) What is the overall reaction order?

I. If the decomposition of HI(g) into H2(g) and I2(g) is known to be second order with respect to HI:

a) Write a balanced chemical equation for this reaction.

b) Write the rate law for this reaction.

c) When the concentration of HI is 2.50 M, the rate of decomposition is 1.58 x 10-2 M/s. Calculate the value and units of the rate constant.

d) What is the rate of this reaction when the concentration of HI is 1.50 M?