Question

5gm of naoh is dissolved in 200ml of water find molarity of solution

Answer 1

Molarity of solution is 0.625 mol/dm³

Answer 2

Answer: Molarity of NaOH solution 0.625 M.

Explanation:

$Molarity=\frac{\text{mass of solute}}{\text{molecular mass of solute}\times \text{volume of solution in liters}}$

Mass of  sodium hydroxide = 5 g

Molecular mass of sodium hydroxide = 40 g/ mol

Volume of the solution = 200 mL= 0.2 L (1L=1000mL)

Using above expression to calculate molarity:

$M=\frac{5 g}{40 g/mol\times 0.2 L}=0.625 M$

Molarity of NaOH solution is 0.625 M.