(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.
(b)i. A mixture of nitrogen(IV) oxide and oxygen is bubbled into warm water to produce
trioxonitrate(V) oxide, write a balanced chemical equation for the reaction.
ii. Using a balanced chemical equation only, explain what would happen if nitrogen(IV) oxide is bubbled into warm water.
iii.
Compare the gases evolved when trioxonitrate(V) acid decomposes under each of the following properties:
i. pH
ii. Solubility in water
iii. Reaction with carbon(II) oxide
(c)i. Name two oxides of sulphur
ii. Write a balanced equation for the reaction between each of the named oxides(Sulphur(IV) oxide, Sulphur (VI) oxide) and water
(d)i. Name one calcium compound
a, Used to dry ammonia gas
b. Used in the manufacture of cement
c. That causes hardness in water
d. Name one calcium compound
(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.
(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.