Which of these represents a redox reaction?
-
A.
AgNO3 + NaCl → AgCAl + NaNO3 -
B.
H2S + Pb(NO3) → PbS + 2HNO3 -
C.
CaCO3 → CaO + CO2 -
D.
Zn + 2HCl → ZnCl2 + H2
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