1.

What will be the normality of the salt solution obtained by neutralizing x mL y (N) HCI with y mL x (N) NaOH, and finally adding (x + y) mL distilled water?

Answer»

`(2(x+y))/(xy)` N
`(xy)/(2(x+y))` N
`((2x)/(x+y)) N`
`((x+y)/(xy))N`

Solution :`underset("meq LEFT")underset("meq.added") underset(0)underset(xy)(HCl) + underset(0)underset(xy)(NAOH) to underset(xy)underset(0)(NaCl) + underset(xy)underset(0)(H_(2)O)`
Normality `=("Number of meq:")/("Volume of solution in mL")`
`=(xy)/("Volume of solution in mL") =(xy)/((x+y)(x+y)) =(xy)/(2(x+y)) N`


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