For the synthesis of ammonia with a volume of 100 liters, nitrogen is required in volume.

The synthesis of ammonia is described by the equation: N2 + 3H2 = 2NH3.
1) 22.4 l – molar volume of gases.
2) 100 / 22.4 = 4.5 mol – the amount of ammonia substance.
3) 4.5 * 2/1 = 9 mol – the amount of nitrogen substance, determined by the reaction equation.
4) 9 * 22.4 = 201.6l.
Answer: the volume of nitrogen required for the synthesis of 100 liters of ammonia is 201.6 liters.