What is the minimum weight of a 10% acetic acid solution needed to completely dissolve 10 g of calcium carbonate?

1. Let’s write down the reaction equation:

CaCO3 + 2CH3COOH = (CH3COO) 2Ca + CO2 + H2O.

2. Find the amount of calcium carbonate:

n (CaCO3) = m (CaCO3) / M (CaCO3) = 10 g / 100 g / mol = 0.1 mol.

3. According to the reaction equation, we find the amount, and then the mass of acetic acid and solution:

n (CH3COOH) = 0.5n (CaCO3) = 0.05 mol.

m (CH3COOH) = n (CH3COOH) * M (CH3COOH) = 0.05 mol * 60 g / mol = 3 g.

m (solution) = m (CH3COOH) * 100% / ω (CH3COOH) = 3 g * 100% / 10% = 30 g.

Answer: m (solution) = 30 g.