Balanced Chemical Equation – Solution
CaC2 + 2H2O → Ca(OH)2 + C2H2
The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. New substances are formed as a result of the rearrangement of the original atoms. As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged – this follows from the law of conservation of mass of substances.
Chemical Reaction Information
Calcium Carbide + Water = Portlandite + Acetylene
Reaction Type
Double Displacement (Metathesis)
Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.
Reactants:
CaC2 – Calcium carbide
- Other names: Calcium acetylide.
- Appearance: White powder to grey/black crystals.
H2O – Water, oxidane
- Other names: Water (H2O), Hydrogen oxide, Hydrogen hydroxide.
- Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas.
Products:
Ca(OH)2 – Calcium hydroxide
C2H2 – Acetylene, Ethyne
- Other names: Ethine.
- Appearance: Colorless gas.
| H2O + CaC2 → C2H2 + Ca(HO)2 |
| H2O + CaC2 → Ca(OH)2 + C2H2 |
| H2O + CaC2 → CaO + C2H2 |
| H2O + CaC2 → Ca(OH)2 + H2C2 |
| H2O + CaC2 → C2H2 + Ca(OH)2OH2 |
