Question

40g of sodium hydroxide is dissolved in 2L of water , the molarity of solution is *



1M

0.1M

0.5M

0.25M

​

Answer 1

Answer:

0.5 M

Explanation:

molarity is the Moles of the solute/volume of solution (in litres)

it is denoted by **M**

So, M=mol (of solute)/volume of solution in litres

moles of sodium hydroxide here are given mass/molar mass

here mass given is 40g

so number of moles are 40/40 as sodium hydroxide has 40 as molar mass

now, volume given is 2L

so, Molarity is

(40/40)/2 = 0.5M

Answer 2

Answer:

0.5M.

I hope it will help you