N2+3h2=2nh3 how many grams of hydrogen must react if the reaction producesd 27 grams of nh3

Answer:-

4.765 grams

Explanation:-

Molecular weight of Hydrogen gas H2 = 1 x 2 = 2 gram

Molecular weight of NH3 = 14 x 1 + 1 x 3 = 17 gram

The balanced chemical equation for the reaction is

N2 + 3 H2 - -> 2 NH3

From the chemical equation we see

To produce 2 NH3 we need 3 H2 to react.

∴ To produce 2 x 17 grams of NH3 we need 3 x 2 grams of H2 to react.

To produce 27 grams of NH3 we need (3 x 2) x 27 / (2 x 17) grams of H2 to react

=4.765 grams of H2 to react