Find the mass of water and citric acid needed to prepare 50 grams of a five percent solution.

univerkov | April 11, 2021 | education

1. The mass of a substance is found according to the following formula:

m (substance) = m (solution) * ω, where: m – mass, ω – mass fraction (5% = 0.05).

2. Substitute the values into the formula:

m (substance) = 50 * 0.05 = 2.5g.

3. We are looking for a mass of water:

m (solution) – m (substance) = 50 – 2.5 = 47.5g.

Answer: m (water) = 47.5g; m (substance) = 2.5g.

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