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Calculate pH for: (a) 0.01N Ca(OH)(2) ...

Calculate pH for:
(a) `0.01N Ca(OH)_(2)`
(b) `0.01M Ca(OH)_(2)`
(c ) `0.0008M Mg(OH)_(2)`
Assume complete ionisation of each.

Text Solution

Verified by Experts

0.0008 `M Mg(OH)_(2)`
`Mg(OH)_(2) to Mg^(2+)+ 2OH^(-)`
`8 xx 10^(-4)M" 0 0"`
`0" "8 xx 10^(-4)" "2 xx 8 xx 10^(-4)`
`therefore [OH^(-)]=16 xx 10^(-4)M`
`therefore pH =11.2041`
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