Question

Calculate the molarity of sodium hydroxide solution, when 2 g of sodium

hydroxide is dissolved in 50 ml of it’s solution.

Answer 1

Answer:

1M

Explanation:

molar mass of NaOH= 40g/mol

no.of moles =

given mass/molar mass

= 2g/40gm/mol

= 1/20mol

molarity of solution = no.of moles/volume of solution in litres

=(1/20)/50/1000L)

= (1/20)×20 M

1M