Answer
a) $N_{2} + 3H_{2} → 2NH_{3}$
b) $2H_{2} + CO → CH_{3}OH$
c) $2S +3O_{2} + 2H_{2}O → 2H_{2}SO_{4}$
Work Step by Step
a) $N_{2} + 3H_{2} → 2NH_{3}$
one mole of free nitrogen reacts with three moles of hydrogen in free state to form two moles of ammonia gas.
b) $2H_{2} + CO → CH_{3}OH$
two moles of hydrogen reacts with one mole of carbon monoxide to form one mole of methanol.
c) $2S +3O_{2} + 2H_{2}O → 2H_{2}SO_{4}$
two moles of sulfur in free state reacts with three moles of oxygen and two moles of water to form two moles of sulfuric acid.
