   Chapter 15, Problem 26QAP ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

#### Solutions

Chapter
Section ### Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
13 views

# Hydrogen peroxide solutions sold in drugstores as an antiseptic typically contain 3.0% of the active ingredient, Hydrogen peroxide decomposes into water and oxygen gas when applied to a wound according to the balanced chemical equation 2H 2 O 2 ( aq ) → 2H 2 O ( l ) + O 2 ( g ) What approximate mass of hydrogen peroxide solution would be needed to produce 1.00 g of oxygen gas?

Interpretation Introduction

Interpretation:

The mass of hydrogen peroxide solution that is needed to produce 1.00g of oxygen gas is to be calculated.

Concept Introduction:

Solution may be defined as the mixture of a minor component which is known as solute and the major component that is known as solvent. The solute is uniformly distributed in the solvent.

Mass percentage is defined as the total mass of solute divided by the total mass of the solution, multiplied by 100 to get the percentage. The formula for the same is,

Mass%=massofsolutegmassofthesolutiong×100.

Explanation

The given balanced chemical equation is,

2H2O2aq2H2Ol+O2g

It is clear that 2mol of H2O2 produces 2mol of H2O and 1mol of O2 gas.

The given mass percent of H2O2 solution is 3.0%.

The given mass of oxygen gas is 1.00g.

The molar mass of oxygen is 32g/mol.

The moles of oxygen is calculated by the formula,

Moles=MassgMolarmass

Substitute the value of molar mass and mass of oxygen gas in the above expression.

Moles of O2=132=0.03125mol

Thus, the moles of oxygen gas produced by hydrogen peroxide is 0.03125mol.

According to the equation, if 2mol of H2O2 produces 1mol of O2 gas then 0.03125mol of O2 is produced by 0.03125×2=0.0625mol of H2O2.

The molar mass of H2O2 is 34g/mol

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started 