Balanced Chemical Equation – Solution
Ca + 2H2O → Ca(OH)2 + H2
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 + Water = Portlandite + Tritium
This is an oxidation-reduction (redox) reaction. H2O is an oxidizing agent, Ca is a reducing agent.
- 2 HI + 2 e– → 2 H0 (reduction)
- Ca0 – 2 e– → CaII (oxidation)
Reaction Type
Single Displacement (Substitution)
Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.
Reactants:
Ca
- Names: Calcium.
- Appearance: Silvery-white-to-grey powder.
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
H2
- Names: Dihydrogen, Hydrogen.
- Appearance: Odourless colourless compressed gas.
H2O + Ca → O2 + CaH2 |
H2O + Ca → H2 + CaOH |
H2O + Ca → H2 + Ca(OH)2 |
H2O + Ca → H2 + Ca(OH)2OH |
H2O + O2 + Ca → H2 + Ca(OH)2 |
H2O + Ca → H2 + Ca(OH) |
H2O + Ca → CaOH2 |
H2O + Ca → H2 + CaO |
H2O + Ca → H2 + OH:- + Ca:2+ |