Chemistry · Chemical Reactions and Equations
In which of the following thermal decomposition reactions do a colour change, gas evolution, and solid residue formation all occur simultaneously?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12AgCl → 2Ag + Cl2
- 22KClO3 → 2KCl + 3O2
- 32Pb(NO3)2 → 2PbO + 4NO2 + O2✓
- 4CaCO3 → CaO + CO2
Correct answer
2Pb(NO3)2 → 2PbO + 4NO2 + O2
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