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 Form 4 Electrochemistry Topical Questions and Answers

(a) The set up below can be used to produce sodium hydroxide by electrolyzing brine.
electro1346.JPG
(i) Identify gas Y.
(ii) Describe how aqueous sodium hydroxide is formed in the above set-up.
(iii) One of the uses of sodium hydroxide is in the manufacturing of soaps. State one other use of sodium hydroxide.
(b) Study the information given in the table below and answer the questions that follow.
electro1347.JPG
(i) Construct an electrochemical cell that will produce the largest e.m.f.
(ii) Calculate the e.m.f. of the cell constructed in (i) above.
(iii) Why is it not advisable to store a solution containing #E^(+)# ions in a container made of H?

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