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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

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`0.01 N Ca(OH)_(2)`
`Ca(OH)_(2) to Ca^(2+)+2OH^(-)`
`10^(-2)N" 0 0"`
`"0 "10^(-2)" "10^(-2)`
`therefore [OH^(-)]=10^(-2)M`
`therefore pOH =2 therefore ph =12`
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