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Question

The chemical formula of calcium hydroxide is _________.


A
CaOH2
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B
Ca(OH)2
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C
Ca2(OH)3
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D
CaO2
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Solution

The correct option is A Ca(OH)2
Calcium hydroxide consist of calcium ion and hydroxide ion i.e. Ca2+ and (OH), which have a charge of +2 and -1 respectively.
SymbolCaOHCharge+2-1
On cross-multiplication and balancing the charge, we get the formula as Ca(OH)2.

Chemistry

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