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Chemistry Question?
Explain why calcium hydroxide is written as Ca(OH)2 rather than H2CaO2 and serves as a base rather than an acid.
4 Answers
- wanszetoLv 75 years agoFavorite Answer
Calcium hydroxide is an ionic compound which contains Ca²⁺ and OH⁻ ions in the ratio 1 : 2.
Hence, the ionic formula can be written as Ca²⁺(OH⁻)₂. Not to write the charges, the formula becomes Na(OH)₂.
Compounds containing OH⁻ ions are basic. Ca(OH)₂ is basic because it contains OH⁻ ions.
- Trevor HLv 75 years ago
The divalent Ca 2+ has two monovalent OH- groups attached to it. This gives the formula Ca(OH)2 .