MULTIPLE CHOICE: When copper metal is immersed in aqueous silver nitrate, a spon

Question

MULTIPLE CHOICE:

When copper metal is immersed in aqueous silver nitrate, a spontaneous reaction is observed. This reaction is best explained by stating that:

a) Copper(II) ions have a greater attraction for electrons than do silver ions.

b) Copper(II) ions have a lesser attraction for electrons than do copper atoms.

c) Silver ions have a greater attraction for electrons than do copper(II) ions.

d) Silver ions have a lesser attraction for electrons than do silver atoms.

e) Silver atoms have a lesser attraction for electrons than do copper atoms.

Explanation / Answer

answer : c) Silver ions have a greater attraction for electrons than do copper(II) ions.

explanation

the reaction is :

Cu +   2Ag+ ------------------> Cu+2 + 2Ag

oxidation : Cu----------------> Cu+2 + 2e-

reduction : 2 Ag+ +2e- ------------------> 2 Ag

overall : Cu +   2Ag+ ------------------> Cu+2 + 2Ag

so copper readily loose electrons and Ag+ ion readily gains electrons. the best answer is c)

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