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A solution of hydrogen peroxide is 15.2% by mass. The solution has a density of 1.01g/mL. What is the molarity of the solution?

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4.95M

3.89M

3.02M

7.12M

answer is D.

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Detailed Solution

Hydrogen peroxide has a molecular formula of H2O2.

Use the given density to find the mass of the solution.

1.00L⋅(1000mL/1L)⋅(1.01g/mL)=1010g

Next, find the mass of the hydrogen peroxide present in the solution.

1010g x (0.152) = 153.52g

Convert the mass of hydrogen peroxide into moles of hydrogen peroxide.

153.52g of H2O2 x (1 mole H2O2/31.04g H2O2)=4.95 moles of H2O2

Since we have 1.00L of solution, the molarity is 4.95M.

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