Question

How much water is to be added to dilute 10ml of 10n hcl to make it decinormal?

Answer 1

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

$10\times 10=V\times \large\frac{1}{10}$$\Rightarrow V=1000ml$

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

Answer 2

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.