Question

How would you describe a bottle that contains 0.95 moles of hydrogen peroxide per liter of solution?

Answer 1

Answer:

A bottle that contains 0.95 moles of hydrogen peroxide per liter of solution contains 32.31 g of hydrogen peroxide per liter of the solution.

Explanation:

First, recall that:

Molarity of a substance = no of moles of the substance/volume of the solution in liters.

In this case, the number of moles of hydrogen peroxide is 0.95 mole while the volume of the solution is one liter. Thus;

Molarity of hydrogen peroxide = 0.95/1 = 0.95 M.

Also recall that:

no of moles of a substance = mass of the substance/molar mass of the substance.

Thus;

mass of substance = no of moles x molar mass.

In this case, the no of moles of hydrogen peroxide is 0.95 while the molar mass is 34.01 g/mol. Hence;

mass of hydrogen peroxide = 0.95 x 34.01 = 32.31 g

Hence, a bottle that contains 0.95 moles of hydrogen peroxide per liter of solution contains 32.31 g of hydrogen peroxide per liter of the solution. The solution also has a hydrogen peroxide molarity of 0.95 M.