What volume of hydrogen will be produced if 100cm3 of ammonia is completely decomposed at…

Chemistry WAEC 2002

What volume of hydrogen will be produced if 100cm3 of ammonia is completely decomposed at constant temperature and pressure? The equation for reaction is 2NH3(g) → N2(g) + 3H2(g)

  • 50cm3
  • 150cm3 checkmark
  • 200cm3
  • 300cm3

The correct answer is: B

Explanation

According to the equation 2NH3 → N3 + 3H2
2 x 22400cm3 of ammonia will produce
3 x 22400cm3 of hydrogen
If 100cm3 of NH3 is used.
:. H2 volume = \(\frac{100}{2x22400} x 3x22400
=150cm3
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