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
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