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1g of the carbonate of a metal was diss...

`1g` of the carbonate of a metal was dissolved in `25mL` of `N-HCl`. The resulting liquid required `5 mL` of `N-NaOH` for neutralisation. The `Ew` of the metal Carbonate is

A

50

B

30

C

20

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Acidic meq. used `= 25 xx 1 = 25`
Excess of acidic meq. used `= 5 xx 1 = 5`
`rArr` Acidic meq. used for carbonate = Meq. of carbonate = 20 `20 = (1)/(E) xx 1000 rArr E = 50`
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