Question

find the mass of 2 GMM of calcium hydroxide ( atomic mass: H:1 o:16 Ca:40)​

Answer 1

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The molecular formula of calcium hydroxide is =Ca(OH)

2

.

Its molecular mass is =40+(16+1)×2=40+17×2=74u

The expression the equivalent weight of Ca(OH)

2

is as given below.

Equivalent weight =

No. of replaceable OH groups

Molecular mass

Calcium hydroxide contains two replaceable OH groups

Substitute values in the above expression.

Equivalent weight =

2

74u

=37u