Question

CaСO3 + 4C → CaC2 + 3CO

Answer 1

Ответ:

CaCO3 + 4C = CaC2 + 3CO

восстан-ль C (0) - 2 е -> C (+2) окисление

окислитель C (+4) +5 e -> C (-1) восстановление

окислитель C (+4) +2 e -> C (+2) восстановление

окислитель C (0) + 1 e -> C (-1) восстановление

Answer 2

The chemical equation you've provided represents the reaction between calcium carbonate (CaCO3) and carbon (C) to produce calcium carbide (CaC2) and carbon monoxide (CO). This reaction is known as the thermal decomposition of calcium carbonate. Here's the balanced chemical equation for this reaction:

CaCO3 + 4C → CaC2 + 3CO

Balanced equation: 1 CaCO3 + 4 C → 1 CaC2 + 3 CO

In this reaction, calcium carbonate (CaCO3) decomposes into calcium carbide (CaC2) and carbon monoxide (CO) in the presence of heat. This is a common method for producing calcium carbide industrially.