Question

in the presence of water, 15.6g of sodium peroxide, Na2O2 forms sodium hydroxide NaOH and releases oxygen gas O2.

The reaction is represented by the following equation

2Na2O2+2 H2O ---- 4NaOH+O2

knowing that the reaction lasts 10 secs what is the average reaction rate of the sodium peroxide in moles per second

Answer 1

Moles of $Na_2O_2= \frac{15.6}{78}=0.2 moles$

Moles per second $=\frac{0.2}{10}=0.02 mol/sec$