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Some Basic Concepts of Chemistry
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11/08/2021 11:42 am
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A mixture of NH4NO3 and (NH4)2HPO4 contain 30.40% mass percent of nitrogen. What is the mass ratio of the two components in the mixture?
(a) 2 : 1
(b) 1 : 2
(c) 3 : 4
(d) 4 : 1
1 Answer
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11/08/2021 11:46 am
Correct answer: (a) 2 : 1
Explanation:
Let wt. of NH4NO3 and (NH4)2HPO4 are x and y gram respectively
\(\frac{\frac{x}{80}\times 2 \times 14 + \frac{y}{132} \times 2 \times 14}{x+y}\)x 100
= 30.4
x : y = 2 : 1