Calculating the Volume Strength of 1.5N H2O2 Solution

To calculate the volume strength of a 1.5N H2O2 solution, we need to understand the concept of normality and how it relates to the concentration of the solution. Normality (N) is a unit of concentration that represents the number of gram equivalents of solute per liter of solution.

Step 1: Determine the Molecular Weight of H2O2
The first step is to determine the molecular weight of H2O2 (Hydrogen Peroxide). The molecular weight of hydrogen (H) is 1 gram per mole, and the molecular weight of oxygen (O) is 16 grams per mole. Since there are two hydrogen atoms and two oxygen atoms in H2O2, the molecular weight is calculated as follows:
(2 * 1) + (2 * 16) = 34 grams per mole.

Step 2: Convert Normality to Molarity
To calculate the molarity (M) of the solution, we need to convert the normality (N) value. In the case of hydrogen peroxide, the normality and molarity are the same because the molecular weight of H2O2 is equal to 34 grams per mole. Therefore, the molarity of the solution is also 1.5M.

Step 3: Convert Molarity to Volume Strength
Volume strength is a measure of the volume of hydrogen peroxide required to liberate 1 liter of oxygen at STP (Standard Temperature and Pressure). The volume strength is given by the equation:
Volume Strength = Molarity * Molecular Weight

Substituting the values, we have:
Volume Strength = 1.5 * 34 = 51

Therefore, the volume strength of the 1.5N H2O2 solution is 51.

Answer: c) 8.8