CIE Jun 2013 v2 Paper 2 Q1

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Examiners For Use Answer all the questions in the spaces provided. Ammonium sulfate is a fertiliser which is manufactured by the reaction between ammonia and sulfuric acid. (a) Ammonia is described as a weak base and sulfuric acid as a strong acid. By using an equation, explain clearly what is meant by the term weak base.[3] (b) Ammonia and sulfuric acid are both manufactured by processes which involve chemical equilibria. (i) Sulfuric acid is produced from sulfur trioxide which is made by the Contact process. State three important operating conditions for the Contact process for the manufacture of sulfur trioxide. For each of your conditions, you should avoid the use of vague phrases such as high temperature. condition 1condition 2condition 3(ii) How is the sulfur trioxide produced converted into sulfuric acid?[4]UCLES 2013 9701/22/M/J/13<br /> Examiners For Use (c) Chloropropanols such as 1,3-dichloropropan-2-ol (1,3-DCP) are present in some foods. Cl CH2CH(OH)CH2Cl 1,3-DCP (i) What will be produced when 1,3-DCP is reacted separately with the following reagents under suitable conditions? In each case give the structural formula. concentrated sulfuric acid an excess of ammonia (ii) Describe as fully as you can what type of reaction occurs with ammonia.[4] [Total: 11]UCLES 2013 9701/22/M/J/13 [Turn over<br />

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