Answers 2026-2027_MDCPS_2003345_Chemistry_1_B-CR Oxidation-ReductionQuestion 1

1

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Oxidation-Reduction

Question 1 • 2026-2027_MDCPS_2003345_Chemistry_1_B-CR

Which of these reactions are redox reactions? Check all that apply.

Answer

A

Cd + HCl → CdCl2 + H2

B

CuCl2 + Na2S → 2NaCl + CuS

C

CaCO3 → CaO + CO2

D

2ZnS + 3O2 → 2ZnO + 2SO2

E

CH4 + 2O2 → CO2 + 2H2O

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