Question

Calculate the molarity of a NaOH solution that is prepared by diluting 100mL of 0.20M NaOH with 150mL of H2O.

Answer 1

Molarity of solution = 0.08 M

Further explanation

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

`\tt M=(n)/(V)`

Where

M = Molarity

n = number of moles of solute

V = Volume of solution

• mol of NaOH

`\tt mol=0.2~M* 100~ml=20~mlmol=0.02~mol`

• molarity

Volume of solution = 100 ml + 150 ml = 250 ml

`\tt M=(0.02~mol)/(0.250~L)=0.08`