Question

Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid according to the reaction

$$ \mathrm{BaO}_{2}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq}) \longrightarrow \mathrm{BaSO}_{4}(\mathrm{~s})+\mathrm{H}_{2} \mathrm{O}_{2}(\mathrm{aq}) $$

How many milliliters of \(3.00 \mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}\) (aq) are needed to react completely with \(47.9 \mathrm{~g} \mathrm{BaO}_{2}(\mathrm{~s}) ?\)

Zinc reacts with hydrochloric acid according to the reaction equation

$$ \mathrm{Zn}(\mathrm{s})+2 \mathrm{HCl}(\mathrm{aq}) \longrightarrow \mathrm{ZnCl}_{2}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{~g}) $$

How many milliliters of \(4.00 \mathrm{M} \mathrm{HCl}(\mathrm{aq})\) are required to react with \(4.55 \mathrm{~g} \mathrm{Zn}(\mathrm{s}) ?\)

Answer 1