Calculate the mass of sodium required to obtain 10.7 g of sodium chloride in excess of chlorine.

univerkov | April 27, 2021 | education

1. Calculate the chemical amount of sodium chloride:

n (NaCl) = m (NaCl): M (NaCl);

M (NaCl) = 23 + 35.5 = 58.5 g / mol;

n (NaCl) = 10.7: 58.5 = 0.1829 mol;

2.determine the amount of sodium:

n (Na) = n (NaCl) = 0.1829 mol;

3.Calculate the mass of sodium:

m (Na) = n (Na) * M (Na) = 0.1829 * 23 = 4.2 g.

Answer: 4.2 g.

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