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Question

Nitrogen reacts with hydrogen to give ammonia. Calculate the volume of the ammonia gas formed when nitrogen reacts with 6 litres of hydrogen. All volumes measured at s.t.p.

Mole Concept

Chemistry, Class 10, ICSE, J Dalal

July 31, 2024

Answer

[By Lussac’s law]

N₂ + 3H₂ → 2NH₃

1 vol : 3 vol → 2 vol

To calculate the volume of ammonia gas formed.

H₂ : NH₃

3 : 2

6 : x

⇒ x = 6 × $2\over 3$

Hence, volume of ammonia gas formed is 4 lts

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