[r-soy]

Hi

1 )

show how many electron are transferred in the following equation

a ) Cu + Ag ----- > Cu^+ + Ag
B) Zn + cl2 -----  > ZnCl2

my answer is :
A) Cu ---- > Cu ^+ + ie-
1e + Ag^+ ----- > Ag

then the electron which transfer is ( 1 )



B ) Zn + cl2 ---- zncl2
Zn ------ > zn^+2 + 2e-
4e- cl2 ------- > 2cl

then the electron which transfer is ( 8 )

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Q 2 : which of the following reaction are redox reacion :
a) Cl2 + 2OH^- ---- > ClO- + H2O
B) Cu ^2+ + 4 Nh3 -----> [Cu(NH3)4 ]^2+
C) Ca + f2 ----- > CaF2

I chose ( C) becuse here Oxidation and reduction in it