Question

N2 + 3H2 → 2NH3


How many moles of hydrogen, H2, are needed to react with 2.0 moles of nitrogen, N2?


Please round final answers to the tenth position, one place after the decimal. Please only report the numerical answer.

My answer was 10.8

Answer 1

 The number of  moles  of H₂ that are needed  to react with 2.0  moles of N₂  is    6.0 moles

 calculation

N₂  +3H₂→   2NH₃

The moles of  H₂  is  calculated  using the mole ratio

That is from equation above  N₂:H₂  is 1 :3

therefore the moles of  H₂ = 2.0  moles  x (3/1) = 6.0 moles