Answer to Question #247335 in General Chemistry for inter 9

Question

Determine the empirical formula of the compound containing 87.5% nitrogen and 12.5% H by mass

Answer 1

Let total mass be 100

Assuming 100g of compounds N would be 87.5g and 12.5g H, then amount of

N = 87.5/14 which is 6.25mol

H = 12.5/1 which is 12.5mol

$\therefore$ N : H =6.25:12.5

N : H = 1 : 2

The empirical formula for this compound is NH₂

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