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1) Assuming the general trend for reactivity of metals across a row, predict whe

ID: 792608 • Letter: 1

Question

1) Assuming the general trend for reactivity of metals across a row, predict whether or not the following reactions will take place.

a) Cr + FeCl3

b) Al +NaCl

2) for the following reactions, determine the most and least reactive metals.

                                                          more reactive metal less reactive metal                   

a) Cu + FeCl3 -> no reaction

b) Mg + CuCl2 -> MgCl2 + Cu      _____________    ________________

c) K + AuCl3 -> KCL + Al               _____________    ________________

d) Au + FeCl3 -> no reaction      _____________    _______________

e) Cu + AuCL3 ->CuCl2 + Au        _____________      _________________

f) Mg + KCL -> NO reaction __________________ __________________

g) Al + MgCl2 -> no reactionn _________________ ________________

Explanation / Answer

1)

a can not takes place

b can takes place

Al + 3 NaCl.......> AlCl3 + 3Na

2) reactivity order of metals is

K > Mg >Al > Cu > Au

because K & Al are S- block elements these are most reactive and Au is inert metal so it is least reactive