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

Answer:

2g

Explanation:

There is 0.2mol NaOH in 1000ml solution.

So, there is 0.05 mol NaOH in 250ml solution.

0.05mol NaOH=(40×0.05)g NaOH

=2g NaOH

So,the amount of NaOH is 2g.

Hope I'm right…though I am confused about the defination of Molarity . I have forgotten the definition.