Applying Concepts
These questions test conceptual learning.
Four metals A, B, C, and D exhibit these properties:
(a) Only A and C react with 1.0-M HCl to give H2 gas.
(b) When C is added to solutions of ions of the other metals, metallic A, B, and D are formed.
(c) Metal D reduces Bn+ ions to give metallic B and Dn+ ions. On the basis of this information, arrange the four metals in order of increasing ability to act as reducing agents.
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