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b) Calculate the concentration of hydrog...

b) Calculate the concentration of hydrogen ion in moles per litre of a solution whose pH is 5.4

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(b) pH of the solution `=5.4`
`[H_3 O^+]=` antilog of `(-pH)`
= antilog of `(-5.4)`
= antilog of `(-6+0.6)=bar(6).6`
`=3.981xx10^(-6)`
i.e, `3.98xx10^(-6) xx10^(-6) "mol dm"^-3`
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