Question

The volume of water that would convert $10ml$ of decamolar $HCl$ solution to decamolar solutions is

• A. ${10}^{3}ml$
• B. ${10}^{2}ml$
• C. $9.9\times {10}^{3}ml$
• D. $1.2L$

Answer 1

The correct option is A ${10}^{3}ml$

Milli moles of conc.HCl=milli moles of dil HCl

10×10=V×11010×10=V×110⇒V=1000ml⇒V=1000ml

Thus 990ml of water should be added to 10ml on conc.HCl to get decinormal solution.

Hence (a) is the correct answer.