The decomposition of hydrogen peroxide takes place according to the following equation:

2 H2O2(aq) 2 H2O(l) + O2(g)

Julie analyzes this reaction in a closed glass flask whose gaseous phase occupies a volume of 1.50 L at a temperature of 22C. If the rate of the reaction as a function of peroxide is 4.0

10^-4 mol/L s, what will be the pressure variation of the system after 30 s? (The temperature and gas volume are assumed to remain constant.)

1)14.71 kPa

2)19.61kPa

3)29.41kPa

4)39.22kPa