Month: August 2022

Chemistry Paper 2 (233/2) 1 The flow chart below shows some of the processes involved in large scale production of sulphuric (VI) acid. Use it to answer the questions that follow. (a) Describe how oxygen is obtained from air on Read More …

Chemistry Paper 1 (233/1) 1 (a) What name is given to the process by which alcohol is formed from a carbohydrate? (1 mark) (b) Explain why the solubility of ethane in water is lower than that of ethanol. (2 marks) Read More …

Chemistry Paper 3 (233/3) 1 You are provided with:   solution A’ aqueous copper (H) sulphate;  solid B, iron powder;  0.02 M acidified potassium manganate (VII), solution C.You are required to determine the molar heat of displacement of copper by Read More …

Chemistry Paper 2 (233/2) 1 )The grid given below represents part of the periodic table. Study it and answer the questions that follow. The letters do not represent the actual symbols of elements. M N P T R a)(i) Select Read More …

CHEMISTRY (233) 4.5.1 Chemistry Paper 1 (233/1) 1. The set up below can be used to prepare oxygen gas. Study it and answer the questions that follow. (a) Identify gas x ? (b) What property of oxygen makes it possible Read More …

Chemistry Paper 3 (233/3) 1 You are provided with: – solution J containing copper (ll) ions. solution K, 0.1 M sodium thiosulphate. aqueous potassium iodide, solution L. solution N, sodium hydroxide. starch indicator, solution M. You are required to determine the: – concentration of copper (ll) Read More …

Chemistry Paper 2 (233/2) 1 (a) The set-up below was used to prepare dry hydrogen chloride gas, and investigate its effect on heated iron filings. (i) Name substance L (1 mark) (ii) Name liquid M. (1 mark) (m) What will be observed in Read More …

KCSE Past Papers Chemistry 2014 3.6 CHEMISTRY (233) 3.6.1 Chemistry Paper 1 (233/1) 1 Explain how the hotness of a Bunsen burner flame can be increased. (1 mark) 2 When dilute hydrochloric acid was reacted with solid B, a colourless Read More …

CHEMISTRY Paper 3 (PRACTICAL) 1. You are provided with: – 2.0 g of substance A, labelled solid A. – Solution B, 0.05 M hydrochloric acid. – Methyl orange indicator. You are required to determine the: – solubility of substance A in water. – relative Read More …

Paper 2 (THEORY) 1 (a) (i) Carbon (IV) oxide is present in soft drinks. State two roles of carbon (IV) oxide in soft drinks. (l mark) (ii) Explain the observation made when a bottle containing a soft drink is opened. Read More …