Question

a solution contains 50 g of common salt in 200g of water .calculate the concentration in terms of mass by mass percentage of the solution

Answer 1

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Answer 2

Answer: The mass percent of common salt is 20 %.

Explanation:

A solution contains both solute and solvent. A solute is a substance which is present in smaller proportion and solvent is a substance which is present in larger proportion.

We are given:

Mass of common salt (solute) = 50 g

Mass of water (solvent) = 200 g

To calculate the mass percent of common salt, we use the equation:

$\text{Mass percent of common salt}=\frac{\text{Mass of common salt}}{\text{Mass of solution}}\times 100$

Mass of solution = (50 + 200) = 250 g

Mass of common salt = 50 g

Putting values in above equation, we get:

$\text{Mass percent of common salt}=\frac{50g}{250g}\times 100=20\%$

Hence, the mass percent of common salt is 20 %.