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 Form 4 Chemistry Paper 2 Sample Revision Questions With Answers

a). Study the standard electrode potentials for the elements given below and answer the questions that follow.
3120211037.png
i).What is the #E^theta# value of the weakest reducing agent?
ii).Which element is likely to be hydrogen? Give a reason for your answer.
iii).Draw a well labelled diagram of an electrochemical cell that can be formed when the half cell of V and Q.
iv).Calculate the e.m.f of the cell in (iii) above
v).Write the overall equation for the reaction in (III) above.
vi).Identify two half cells which when combined would produce the lowest e.m.f.
b).Study the set up below and use it to answer the questions that follow.
3120211042.png
i).Identify the gases
X
Y
ii).Label the electrodes.
iii).Write half equation for the reaction taking place at each electrode.

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