
Interpretation: The mass percent of H2O2 in the commercial hydrogen peroxide solution is to be calculated.
Concept Introduction: In
Relation between density (d) and volume (V) is:
d=mV
Here, m is mass.
The expression of mass percent in terms of mass solution is:
Mass percent=Mass soluteMass solution×100%
In this solution, first the given equation is balanced and then, with the help of a balance chemical equation, the no. of moles of hydrogen peroxide that reacts with potassium permanganate are to be calculated by applying stoichiometric mole-mole relationships that can be obtained from the balanced chemical equation. The calculated moles are converted into their corresponding mass by the use of molar mass as a conversion factor.

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Chapter 16 Solutions
Mastering Chemistry with Pearson eText -- Standalone Access Card -- for Introductory Chemistry (6th Edition)
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