the volume in litres or dm 3 of N 2 evolved at S.T.P.

ICSE Class 10 Chemistry 2015 Solved Paper

Consider the following reaction and based on the reaction answer the questions that follow :
(NH4)2Cr2O7

‌ heat ‌

─────▸

N2(g)+4H2O(g)+Cr2O3
Calculate:

Question : 62

Total: 85

the volume in litres or dm3 of N2 evolved at S.T.P.

Solution:

If 252‌gm of (NH4)2Cr2O7 release 22.4l of N2 at STP
Then 63‌gm of (NH4)2Cr2O7 release =‌

22.4

252

×63=5.6l .

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