Question

.How to prepare 0.5N solution of NaoH (1) 20 gram​

Answer 1

Answer:

I can't understand can you please post it again

Answer 2

Equivalent weight of NaOH is ~ 40.0 g

i.e. sum of atomic weight - (Na — 23g) + (Oxygen — 16g) + (Hydrogen — 1g)

2. To make 1 N NaOH solution - dissolve 40.0g of NaOH in 1 litre of water.

To prepare 0.5 N NaOH Solution - dissolve 20.0 g of NaOH in 1 litre of Water

3. To make 0.5 N NaOH in 100 ml of water :

1000 ml (1 litre) of water - 20 g of NaOH (Point no 2)

1 ml of water - (20/1000) g of NaOH

For 100 ml of water - (20/1000)*(100) = 2g of NaOH

To prepare 0.5 N NaOH in 100 ml of water - add 2 g of NaOH in 100 ml of water.