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B
20
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C
10
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D
40
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Solution
The correct option is A 30 According to the Haber's process N2 reacts with H2 as per the equation: N2(g) + 3H2(g)→2NH3(g)
From the equation above, we can say that:
2 moles of NH3 requires 3 moles of H2. ∴
Moles of H2 required to form 20 moles of NH3 = 32×20 = 30mol
Hence, the correct answer is option (c).