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The decomposition of cetian mass of CaCO...

The decomposition of cetian mass of `CaCO_(3)` gave `11.2dm^(3)` of `CO_(2)` gas at STP. The mass of KOH required to completely neutralise the gas is:

A

56 g

B

28 g

C

42 g

D

20 g

Text Solution

Verified by Experts

The correct Answer is:
B
Weight of `11.2 dm^(3)` of `CO_(2)` gas at STP is `44//2=22 g`
`underset(56 g)(KOH)+underset(44 g)(CO_(2)) rarr KHCO_(3)`
`KOH` required for complete neutralisation of 22 g `CO_(2)` is `56/44xx2=28 g`
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