Write the reaction equation: C → CO2 → H2CO3 → K2CO3

carbon burns to yield carbon dioxide in sufficient oxygen:

C + O2 = CO2

Carbon dioxide with water forms a weak unstable carbonic acid:

CO2 + H2O = H2CO3

Carbonic acid reacts with potassium hydroxide to form potassium carbonate and water (neutralization reaction):

2 KOH + H2CO3 = K2CO3 + 2 H2O



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