Question

2) 11 g of oxalic acid is dissolved in 500 ml of solution. Calculate mass percentage if density of the solution is 1.1 g/ml.​

Answer 1

Mass percentage if density of the solution is 1.1 g/ml is 2%

Given:

Mass of oxalic acid = Mass of solute = 11 g

Mass of Solution = 500 ml

Density = 1.1 g/ml

Explanation:

Now, the mass percentage of solute is given by the formula:

Mass percentage of solute = (Mass of solute × 100)/(Mass of solution × 50)

Since, mass of solution is in ml, we need to convert it to grams.

Mass of solution = Volume of solution × Density of solution

On substituting the values, we get,

Mass of solution = 500 × 1.1 = 50 × 11 g

Now, the mass percentage of solute becomes,

Mass percentage of solute = (11 × 100)/(50 × 11)

∴ Mass percentage of solute = 2%