can anyone telll me wich of the following are redox reactions? and explain why?
A. 2Na +Cl2 -----> 2NaCl
B. C + O2 ---> CO2
C. 2H2O -----> 2H2 + O2
D. NaCl + AgNO3 ----->AgCl + NaN03
E. NH3 + HCl -----> NH4+ + Cl-
F. 2KCl03 -----> 2KCl + 3O2
G. H2 + Cl2 ----> 2HCl
H. H2SO4 + 2KOH -----> K2SO4 + 2H2O
I. Zn + CuSO4 -----> ZnSO4 + Cu
2007-06-06 18:52:00 · 2 answers · asked by yofosho 1 in Science & Mathematics ➔ Chemistry
A,B,C,F,G.
u can see that in all of the above mentioned rxns the oxidation no. of the reactants changes whereas in the others it does not.
conclusion readily follows frm this fact.
2007-06-06 20:02:48 · answer #1 · answered by s0u1 reaver 5 · 0⤊ 0⤋
a, b, c, f, g and i are all redox.
If any element in the equation changes its valency, or ion charge, then it's redox. Elements forming compounds, for example, or displacement reactions - they're all redox.
2007-06-06 19:58:32 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋