JAMB - Chemistry (1982 - No. 41)
Which of the following is NOT a redox reaction?
2HNO2 + 2HI → 2H2O + 2NO + I2
Zn + H2SO4 → ZnSO4 + H2
Ca(HCO3)2 → CaCO3 + H2O + CO2
4FeO + O2 → 2Fe2O3
2Na + Cl2 → 2NaCl
คำอธิบาย
Ca(HCO2) → CaCO3 + H2O + CO2 is not a redox reaction