Skip to content
Question 59 of 63

Q.Write the balanced equation for the action of heat on Calcium Carbonate.

Puducherry TnboardTamil Nadu HSC First Year (DGE) Board 2024Subjective· 2mImportance★★★★★
94% · 59/63 Questions
🔒 Locked · start free trial →

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

Start your 14-day free trial to unlock the full solution →

On strong heating, calcium carbonate decomposes into calcium oxide (quicklime) and carbon dioxide gas: CaCO3 --(heat)--> CaO + CO2.

Calcium carbonate (limestone, CaCO3) undergoes thermal decomposition (calcination) when strongly heated to about 1200 K (around 900-1000 degrees C). The ionic carbonate breaks down, releasing carbon dioxide gas and leaving behind calcium oxide (quicklime):

CaCO3(s) --(Delta, ~1200 K)--> CaO(s) + CO2(g)

…

Start your 14-day free trial to unlock the full solution →

Unlock everything free for 14 days

  • Full step-by-step solutions
  • Concept-first explanations
  • Methods, shortcuts & mistakes
  • PYQ mapping + timed mock tests
Start 14-day free trial →See Plans & Pricing →

Full access for 14 days. No credit card required.

←Previous questionQ15 — In which process, fused sodium hydroxide is electrolysed for extractio…→Next questionQ17 — Sodium is stored in : (a) Water (b) Kerosene (c) Alcohol (d) None of t…