Question

Mass of oxalic acid in 100ml of N/20 Solution​

Answer 1

Answer:

The molar mass of oxalic acid C2H2O4 is 90g.

And oxalic acid is diprotic, since it is a donor of 2H+ ions per mole

A N/20 solution means 0.05N

Taking the diprotic nature of C2H2O4 into account, we need 90/2 = 45g per litre for a 1N solution, so we need 45/20 = 2.25g dissolved in 1 litre of solution.

The procedure would be to dissolve 2.25g of oxalic acid in (say) 500ml of water, and then add water to make 1 litre of solution.