the mass of grams of Cr 2 O 3 formed at the same time.

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 : 63

Total: 85

the mass of grams of Cr2O3 formed at the same time.

Solution:

If 252‌gm of (NH4)2Cr2O7 produces 152‌gm of Cr2O3 .
Then 63‌gm of (NH4)2Cr2O7 produces =‌

152

252

×63=38‌gm .

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