Question

Calculate the amount of sodium Hydroxide to prepare 0.2 M solution in 250 ml. The Molecular weight of NaOH is 40 g/mol​

Answer 1

Explanation:

Molecular mass of NaOH = 40, so you might think to take 0.2x40 = 8 g of pure NaOH and dissolve it in one litre of water to make one litre of 0.2M solution or take 2 g in 250 mL to make 250 mL.