Question

Hydrogen peroxide, H2O2, is used to disinfect contact lenses. What volume of O2, in mL, or O2(g) at 31 degree celsius, and 741mmHg can be liberated from 10.0mL of an aqueous solution containing 3.00% H2O2 by mass?

The density of aqueous solution of H2O2 is 1.01g/mL.

Thanks! :)

Answer 1

10.0 mL H2O2 x 1.01 g/mL x 0.03 = ? g O2.
mols O2 = g/molar mass
Then use PV = nRT to solve for volume O2 at the conditions listed.

Answer 2

56.7