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pK(w)=12.26 at 100^(@)C. What is the ran...

`pK_(w)=12.26` at `100^(@)C`. What is the range of pH-scale at this temperature? What will be the pH of a neutral solution at this temperature ?

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At `100^(@)C, pK_(w)=12.26`. So, at this temperature the pH scale ranges from 0 to 12.26.
At this temperature, `[H_(3)O^(+)]=sqrt(K_(w))` in a neutral aqueous solution. Therefore, pH of this solution `=(1)/(2)pK_(w)=(1)/(2)xx12.26=6.13`
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