Balance CaO + H₂O → Ca(OH)₂
CaO(s) + H₂O(l) → Ca(OH)₂(aq)
Balance an equation
Arrow. Type -> or =. Subscripts. Plain digits: H2SO4, Ca(OH)2, CuSO4.5H2O. Charges. Fe3+, OH-, SO4 2-, and e- for an electron. States. (s), (l), (g) and (aq) are kept. Coefficients you type are checked.
CaO(s)+H₂O(l)→Ca(OH)₂(aq)
Balanced
Atoms on each side
| Atom | As writtenleft : right | Balancedleft : right |
|---|---|---|
| Ca | 1:1 | 1:1 |
| O | 2:2 | 2:2 |
| H | 2:2 | 2:2 |
Check atoms
How to balance it, step by step
- Count each element on both sides. Every count already matches, so no coefficients are needed.
- Check: Ca 1 = 1, O 2 = 2, H 2 = 2. Balanced.
What happens
It is a combination reaction: two or more substances join to form a single product. Quicklime reacts vigorously with water to form slaked lime, giving out a lot of heat.
Calcium oxide and water: quick answers
What is the balanced equation for calcium oxide and water?
CaO(s) + H₂O(l) → Ca(OH)₂(aq). It is already balanced as written, so every coefficient is 1. Each side then has 1 Ca, 2 O and 2 H.
What type of reaction is calcium oxide and water?
It is a combination reaction: two or more substances join to form a single product. Quicklime reacts vigorously with water to form slaked lime, giving out a lot of heat.
How do you balance CaO + H₂O → Ca(OH)₂?
Count the atoms of each element on both sides: 1 Ca, 2 O and 2 H. They already match, so no coefficients are needed.