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(a) The set-up below was used to collect gas F, produced by the reaction between water and calcium metal
(i) Name gas F
(ii) At the end of the experiment, the solution in the beaker was found to be weak base. Explain why solution was a weak base.
(iii) Give one laboratory use of the solution formed in a beaker
(b) The scheme below shows some reactions starting calcium oxide. Study it and answer questions that follow.
(i) Name the reagents used in step 2 and 4
(ii) Write an equation for the reaction in step 3
(iii) Describe how a solid sample of anhydrous calcium sulphate is obtained in step 5