Question

How many moles of H2 is needed to produce 12 moles of NH3

Answer 1

The balanced reaction is:

`N_2+3H_2\rightarrow2NH_3`

According to this, 3 moles of H2 produce 2 moles of NH3. Use this ratio to find the number of moles of NH3 produced:

`12molNH_3\cdot(3molH_2)/(2molNH_3)=18molH_2`

It means that 18 moles of H2 are needed to produce 12 moles of NH3