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Dil. HNO(3) contains 20% acid and it dis...

Dil. `HNO_(3)` contains 20% acid and it dissolves `10 g CaCO_(3).` The quantity of acid is

A

315 g

B

63 g

C

50 g

D

`12.6 g`

Text Solution

Verified by Experts

The correct Answer is:
C
`underset( 40 + 12 + 48 = 100) ( CaCO _(3)) + underset( 2 [1 + 1 4 + 48] = 126) ( 2 HN _(3)) to Ca (NO _(3)) _(2) +H _(2) O + CO _(2)`
`because 100 g C a CO _(3) ` reacts with `1126 g HNO _(3)`
`therefore 10 g Ca CO _(3)` reacts with `= (126xx 10)/(100) = 12 .6 g HNO _(3)`
`because 20 g HNO _(3)` is present in 100 g acid
`therefore 12.6 g HNO _(3)` is present in
`= (100 xx 12. 6)/(20) = 63. 0 g ` acid
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