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(a) The flow chart below shows a sequence of reactions starting with iron. Study it and answer the questions that follow:
(i) Name the reagent and state the condition for the reactions in step 1.
(ii) Give the names of the following:
(I) Solid S.
(II) Solid V.
(III) Solid T.
(iii) Give reasons for the colour change in step 2.
(iv) Write an ionic equation for the reaction which takes place in step 3.
(v) Name one other substance that could be used instead of sedum hydroxide in step 3.
(b) In an experiment, 3.36g of iron fillings were added to excess aqueous copper (II) sulpahte. Calculate the mass of copper that was deposited.
(Cu=63.5, Fe=56.0)