Question

Question 13 (2 points) How many milliliters of 1.50 M KOH solution are needed to supply 0.125 mole of KOH? 0.0833 mL 0.188 mL 83.3 mL 12.0 mL

Answer 1

The correct option is C. (83.3 mL)

Given:

Molarity = 1.50 M KOH

No of moles of KOH = 0.125 mol

Volume of solution in millilitres = ?

Solution:

Molarity = No of moles of solute / Volume of solution in litres

Volume of solution in litres = No of moles of solute / Molarity

V = 0.125 / 1.50

V = 0.0833 L

Convert Litres into millilitres

Multiply value into 1000

V = 0.0833 × 1000

= 83.3 mL