Question

2.5 molar sulphuric acid contains:

• A. 29.5 g of sulphuric acid per litre of solution.
• B. 245.0 g of sulphuric acid per $1000$ ml of solution.
• C. 24.5 g of sulphuric acid per 100 ml of solution.
• D. 59.0 g of sulphuric acid per litre of solution.

Answer 1

Answer: (B), (C)

The correct options are
B 245.0 g of sulphuric acid per $1000$ ml of solution.
C 24.5 g of sulphuric acid per 100 ml of solution.

$M=2.5M$

Mol. weight of sulphuric acid.

$M_W=98$

If $V=100ml$

$2.5=\frac{m\times 1000}{98\times 100}$

$m=2.5\times 98=24.5g$

$\therefore$ 24.5 g of sulphuric acid per 100 ml of solution is present

In 2.5 molar sulphuric acid.

If $V=1000ml$

245 g of sulphuric acid is present.