Question

Consider this reaction: N2+3H2-----> 2NH3

Suppose that at a particular moment during the reaction molecular hydrogen is reacting at a rate of 0.074 M/S. a) What rate is ammonia being formed? b) At what rate is molecular nitrogen reacting?

Answer 1

Reacting at a rate of H₂ = 0.074 M/S.

So,  0.074 moles of H₂ is reacting per second.

Now, 3 moles of hydrogen reacts to produce 2 moles of NH₃.

0.074 moles of hydrogen reacts to produce (2 x 0.074)/3 moles of NH₃

0.074 moles of hydrogen reacts to produce 0.049 moles of NH₃.

Hence ammonia will form at 0.049 M/s.

Now, 3 moles of hydrogen reacts with 1 moles of N₂.

0.074 moles of hydrogen reacts with (1 x 0.074)/3 moles of NH₃

0.074 moles of hydrogen reacts with 0.0246 moles of NH₃.

Hence molecular nitrogen is reacting at 0.0246M/s.