4 Buffer solutions

 

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Oxford Textbook Pages : 332 - 339

CGP Revision Guide Pages : 140 - 141

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Show Specification Ref : 5.1.3i, 5.1.3j, 5.1.3k, 5.1.3l, 5.1.3m

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AQA Jan 2012 Paper 4 Q3 do not write outside the box ammonia and ethylamine are examples of weak br nsted lowry bases a state the meaning of the term br nsted lowry base mark b i write an equation for the reaction of ethylamine ch ch nh with water to form a weakly alkaline solution mark b ii in terms of this reaction state why the solution formed is weakly alkaline mark c state which is the stronger base ammonia or ethylamine explain your answer stronger base explanation marks extra space wmp jan chem do not write outside the box d give the formula of an organic compound that forms an alkaline buffer solution when added to a solution of ethylamine mark e explain qualitatively how the buffer solution in part d maintains an almost constant ph when a small amount of hydrochloric acid is added to it marks extra space turn over for the next question turn over wmp jan chem
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