General Science • ChemistryEasy
Which of the following is a redox reaction?
A. NaOH + HCl -> NaCl + H2O
B. CaCO3 -> CaO + CO2
C. Zn + CuSO4 -> ZnSO4 + Cu✓ Correct Answer
D. BaCl2 + Na2SO4 -> BaSO4 + 2NaCl
💡 Solution & Explanation
The reaction between zinc and copper sulfate constitutes a classic displacement and redox reaction because elemental zinc is oxidized to zinc ions while copper ions are reduced to metallic copper. The remaining choices represent neutralization, thermal decomposition, and precipitation reactions without electron transfer between chemical species.
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