(a) i. State two conditions used in the Haber process ii. Explain briefly the effect of increasing the pressure on the rate of reaction in the Haber process...

(a) i. The two conditions used in the Haber process are high pressure and high temperature. ii. Increasing the pressure increases the rate of reaction in the Haber process because it shifts the equilibrium towards the side with fewer gas molecules, in accordance with Le Chatelier's principle. (b) i. 2NO + O2 → 2NO3 ii. When nitrogen(IV) oxide is bubbled into warm water, it reacts to form nitric acid (HNO3) and nitric oxide (NO). (c) i. The two oxides of sulfur are sulfur dioxide (SO2) and sulfur trioxide (SO3). ii. Balanced chemical equations for the reactions between the named oxides and water are: SO2 + H2O → H2SO3 SO3 + H2O → H2SO4 (d) i. Calcium chloride is used to dry ammonia gas. ii. Calcium silicate is used in the manufacture of cement. iii. Calcium carbonate causes hardness in water. iv. Calcium hydroxide is also known as slaked lime and is used in various applications such as water treatment and food processing.