Question 10

10.1 The equations below represent two industrial processes involved in the preparation of ammonium nitrate. Write down the:10.1.1 NAME of substance A (1)10.1.2 FORMULA of substance B (1)10.1.3 NAME given for reaction I (1)10.1.4 NAME or FORMULA of the catalyst used in reaction I (1)10.1.5 Name of process X (1)10.1.6 Name of process Y (1)10.1.7 … Read more

Question 6

Carbonyl bromide, COBr2, decomposes into carbon monoxide and bromine according to the following balanced equation: COBr2(g) ⇌ CO(g) + Br2(g) ∆H > 0 Initially COBr2(g) is sealed in a 2 dm3 container and heated to 73 °C. The reaction isallowed to reach equilibrium at this temperature. The equilibrium constant for thereaction at this temperature is … Read more

Question 5

A group of learners uses the reaction between powdered zinc and EXCESS dilute hydrochloric acid to investigate one of the factors that affects the rate of a chemical reaction. The balanced equation for the reaction is: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) They conduct two experiments. The reaction conditions used are summarised in the … Read more

Question 3

The vapour pressure versus temperature graph below was obtained for four straight chain (unbranched) alkanes (P, Q, R and S).FROM P TO S, EACH COMPOUND DIFFERS FROM THE PREVIOUS COMPOUND BY A –CH2 GROUP.The vapour pressures are measured in mmHg. Atmospheric pressure is 760 mmHg. 3.1 Give a reason why alkanes are said to be … Read more

Question 2

2.1 Study the structural formula below. For this compound, write down the:2.1.1 Homologous series to which it belongs (1)2.1.2 IUPAC name (2)2.1.3 IUPAC name of the organic acid used in its preparation (1)2.1.4 STRUCTURAL FORMULA of its straight chain (unbranched) functional isomer (2) 2.2 Write down the structural formula of 4-methylpentan-2-one. (3) 2.3 Consider the … Read more