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(a) The scheme below shows some of the reaction of solution D.
Study it and answer the question that follows.
(i) Give a possible cation present in solution D
(ii) Write an ionic equation for the reaction in step II
(iii) What observations would be made in step V? Give a reason.
(iv) Explain why the total volume of hydrogen gas produced in step I was found to be very low although calcium and solution D were in excess.
(v) State one use of substance E
(b) Starting with solid sodium chloride, describe how a pure sample of lead (II) chloride can be prepared in the laboratory.
(c) (i) State a property of anhydrous calcium chloride which makes it suitable for use as a drying agent for chlorine gas.
(ii) Name another substance that can be used to dry chlorine gas.