# Ca + H2O = Ca(OH)2 + H2 – Chemical Equation Balancer

Or you want a quick look: Instructions

Calcium + Water = Portlandite + Tritium

## Instructions

To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above.

• Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
• Ionic charges are not yet supported and will be ignored.
• Replace immutable groups in compounds to avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.
• Compound states [like (s) (aq) or (g)] are not required.
• You can use parenthesis () or brackets [].

## How To Balance Equations

Read our article on how to balance chemical equations or ask for help in our chat.

`Balance The Equation: Ca + H2O = Ca(OH)2 + H2 1. Label Each Compound With a Variable aCa + bH2O = cCa(OH)2 + dH2 2. Create a System of Equations, One Per Element Ca: 1a + 0b = 1c + 0d H: 0a + 2b = 2c + 2d O: 0a + 1b = 2c + 0d 3. Solve For All Variables a = 1 b = 2 c = 1 d = 1 4. Substitute and Verify Result Ca + 2H2O = Ca(OH)2 + H2 L R Ca: 1 1 ✔️ H: 4 4 ✔️ O: 2 2 ✔️`