Answer to Question #182392 in General Chemistry for sierra

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