Answer: 11 molecules of methane and carbon will be left over.
Explanation: \(C+2H_2\rightarrow CH_4\)
According to given balanced equation,
1 atom of carbon reacts with 2 molecules of hydrogen to form 1 molecule of methane.
Thus 32 atoms of carbon will react with=\(\frac{2}{1}\times 32=64\) molecules of hydrogen.
But only 22 molecules of hydrogen are available.
Thus we see it the other way.
2 molecules of hydrogen react with 1 atom of carbon
22 molecules of hydrogen will react with=\(\frac{1}{2}\times 22=11\)
atoms of carbon
Thus hydrogen is the limiting reagent as it limits the formation of product. Carbon is excess reagent and (34-11)=23 atoms of carbon will be left over.
2 molecules of hydrogen form 1 molecule of methane.
22 molecules of hydrogen form=\(\frac{1}{2}\times 22= 11\) molecules of methane.
