Question

At a high temperature, nitrogen and hydrogen combine to form?

1) Ammonia
2) Water
3) Carbon dioxide
4) Oxygen

Answer 1

At high temperatures, nitrogen and hydrogen combine to form ammonia, as described by the balanced chemical equation 3H2(g) + N2(g) → 2NH3(g).

Step-by-step explanation:

At a high temperature, when nitrogen and hydrogen combine, they form ammonia (NH3). This is represented by the balanced chemical equation: 3H2(g) + N2(g) → 2NH3(g). The equilibrium constant values at various temperatures, such as K25°C 3.3 × 109, K177°C 2.6 × 103, and K327°C 4.1, indicate the favourability of the reaction at these temperatures. In practice, one mole of elemental nitrogen reacts with three moles of elemental hydrogen to produce two moles of ammonia, which is an ingredient in many household cleaners.