Question

In mole concept how to decide which reactant is in excess

Answer 1

Answer:

The reactant have maximum

no.of moles÷Stoichiometric coefficient

ratio is in excess.

Explanation:

When we balence any chemical reaction,

the numbers got are stoichiometric coefficients.

e.g,

N2 + 3H2 ===} 2 NH3.

here,

stoichiometric coefficients of N2 , H2 & NH3 are 1,3 & 2 respectively.