How many grams of water do you need to take to prepare a 5% solution using 5 g of vinegar?
| March 13, 2021 | education
Given:
m (CH3COOH) = 5 g
ω (CH3COOH) = 5%
To find:
m (H2O) -?
Decision:
1) Calculate the mass of the acetic acid solution:
m solution (CH3COOH) = m (CH3COOH) * 100% / ω (CH3COOH) = 5 * 100% / 5% = 100 g;
2) Calculate the mass of H2O in acetic acid solution:
m (H2O) = m solution (CH3COOH) – m (CH3COOH) = 100 – 5 = 95 g.
Answer: The mass of H2O is 95 g.
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