1.

How many molecules of hydrogen is required to produce 4 moles of ammonia? (a) 15 moles (b) 20 moles (c) 6 moles (d) 4 moles

Answer»

(c) 6 moles 

3H2 + N2 → 2NH2 

To get 2 moles of ammonia, 3 mole of H2 is required. 

To get 4 moles of ammonia = 3/2 x 4 

= 6 moles of H2 is required.



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