Question

Which of the following pairs will give dis-placement reactions?
(a) FeSO4 solution and Copper metal
(b) AgNO3 solution and Copper metal
(c) CuSO4 solution and Silver metal
(d) NaCl solution and Copper metal

Answer 1

Answer:

b) AgNO3 solution and Copper metal

Explanation:

Displacement reaction is when a higher reactive metal displaces a lower reactive metal from its salt solution .

In all other cases the metal is less reactive than the solution .

Only in b) , Cu > Ag in reactivity .

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Answer 2

Answer:

AgNO3 solution and Copper metal.

Copper metal and silver nitrate solution gives displacement reaction and the chemical equation can be written as:

Cu+2AgNo_3→cu(No_3)_2+2Ag