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A lab assistant prepared a solution by a...

A lab assistant prepared a solution by adding a calculated quantity of HCI gas `25^@ C` to get a solution with `[H_3O^+]=4xx10^(-5)`M. Is the solution neutral (or) acidic (or) basic.

Text Solution

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`[H_(3)O^(+)]=4xx10^(-5)M`
`pH=-log_(10)[H_(3)O^(+)]`
`pH=-log_(10)[4xx10^(-5)]`
`pH=-log_(10)[4]-log_(10)[10^(-5)]`
`pH=-0.6020-(-5)=-0.6020+5`
`pH=4.398`
Therefore, the solution is acidic.
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