AQA Jan 2010 Paper 1 Q2

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pmt areas outside the box will not be scanned for marking ammonium sulfate reacts with sodium hydroxide to form ammonia sodium sulfate and water as shown in the equation below nh so s naoh aq nh g na so aq h o l a a g sample of ammonium sulfate reacted completely with cm of a sodium hydroxide solution i calculate the amount in moles of nh so in g of ammonium sulfate a marks a ii hence calculate the amount in moles of sodium hydroxide which reacted a mark iii calculate the concentration in moldm of the sodium hydroxide solution used mark b calculate the percentage atom economy for the production of ammonia in the reaction between ammonium sulfate and sodium hydroxide marks wmp jan chem c ammonia is manufactured by the haber process nh n h calculate the percentage atom economy for the production of ammonia in this process mark d a sample of ammonia gas occupied a volume of m at c and a pressure of kpa the gas constant r jk mol calculate the amount in moles of ammonia in this sample marks extra space e glauber s salt is a form of hydrated sodium sulfate that contains by mass of sodium sulfate hydrated sodium sulfate can be represented by the formula na so xh o where x is an integer calculate the value of x marks extra space pmt areas outside the box will not be scanned for marking turn over wmp jan chem

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