Nitrogen reacts with hydrogen to make ammonia: N2 + 3H2 -> 2NH3

Question

Calculate the maximum thoeretical yield of ammonia that can be made by reacting 90g of hyrdrogen with an excess of nitrogen.

Thanks!

Answer 1

Write the equation and balance it.

Convert 90 g H2 to mols. mols = g/molar mass.

Convert mols H2 to mols NH3 by using the coefficients in the balanced equation.

Convert mols NH3 to grams NH3.
g NH3 = mols NH3 x molar mass NH3. That is the theoretical yield.