Question

How many moles are present in 5.0 litre of 0.4 M ${\text{H}}_2{\text{SO}}_4$ solution?

• A. 2.0 Mole
• B. 0.4 mole
• C. 5.0 mole
• D. 2.0 mole

Answer 1

The correct option is A 2.0 Mole

1 litre of 1 M solution means that 1 mole of solute is present in 1 litre solution.
$\therefore$ Moles of solute in 1 litre of 0.4 M solution = 0.4 mol
Thus, moles of solute in 5 litres of 0.4 M solution = 5 $\times$ 0.4 = 2 mol