In industry, sodium is obtained by electrolysis of molten table salt. How much salt should be taken

In industry, sodium is obtained by electrolysis of molten table salt. How much salt should be taken to obtain 2.3 kg of sodium.

Let’s write the reaction equation:

2NaCl (melt electrolysis) = 2Na + Cl2 ↑

Let’s find the amount of sodium substance:

v (Na) = m (Na) / M (Na) = 2.3 / 23 = 0.1 (kmol).

According to the reaction equation, 2 mol of Na is formed from 2 mol of NaCl, therefore:

v (NaCl) = v (Na) = 0.1 (kmol).

Thus, the required mass of sodium chloride (table salt):

m (NaCl) = v (NaCl) * M (NaCl) = 0.1 * 58.5 = 5.85 (kg).

Answer: 5.85 kg.