Question

Са+С=====> CaO+C=====> CaC2+H2O=====>

Answer 1

Ca+2C=CaC2
2CaO+5C=2CaC2+CO2
CaC2+H2O=Ca(OH)2+C2H2↑

Answer 2

The series of chemical reactions you've written is a simplified representation of the production of calcium carbide (CaC2) from calcium (Ca) and carbon (C). Here's a breakdown of each step:

1. Ca + C => CaC: In this step, calcium (Ca) reacts with carbon (C) to form calcium carbide (CaC).

2. CaC + O => CaO + C: The calcium carbide (CaC) is then reacted with oxygen (O) to produce calcium oxide (CaO) and carbon (C).

3. CaC2 + H2O => Ca(OH)2 + C2H2: Calcium carbide (CaC2) is combined with water (H2O) to produce calcium hydroxide (Ca(OH)2) and acetylene gas (C2H2).

The overall reaction is:

Ca + C + O + H2O => Ca(OH)2 + C2H2

This reaction is used in the industrial production of acetylene gas, which has various applications, including as a fuel for welding and cutting metals.