Calculate how much sodium hydroxide can be obtained from 92 g of pure sodium.

1. Sodium hydroxide can be obtained by the reaction:

2Na + 2H2O = 2NaOH + H2 ↑;

2. Calculate the chemical amount of sodium:

n (Na) = m (Na): M (Na) = 92: 23 = 4 mol;

3. Determine the amount of sodium hydroxide obtained:

n (NaOH) = n (Na) = 4 mol;

4. Let’s calculate the mass of hydroxide:

m (NaOH) = n (NaOH) * M (NaOH);

M (NaOH) = 23 + 16 + 1 = 40 g / mol;

m (NaOH) = 4 * 40 = 160 g.

Answer: 160 BC