Question

# The chemical formula of calcium hydroxide is _________.

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

Solution

## The correct option is A Ca(OH)2Calcium 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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