Sample pieces of five metals A, …

Sample pieces of five metals A, B, C, D and E were added to the tabulated solutions separately. The results observed are shown in the table: Metal      A No Change No Change No Change Coating on metal No Change B Grey Deposit on metal Brown Coating on metal No Change Coating on metal No Change C No Change No Change No Change No Change No Change D No Change ---------- No Change Coating on metal No Change E ----------- Brown coating New coating New coating No Change Based on the observations recorded in the table, answer the following: (1) Which is the most reactive metal? (2) Which is the least reactive metal? (3) What would be observed if metal D were added to a solution of copper (II) sulphate? (4) What would be observed if metal E were added to a solution of iron (II) sulphate? (5) Arrange the metals A, B, C, D and E in decreasing order to their reactivity?

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