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pH = 5.4 वाले विलयन में मोल/लीटर में हाइड्रोजन आयनों की सांद्रता होगी:
A. `3.98 xx 10^(8)`
B. `3.88 xx 10^(6)`
C. `3.68 xx 10^(8)`
D. `3.98 xx 10^(-6)`

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Correct Answer - d
`pH=5.4 = -log[H^(+)]`
`therefore [H^(+)] = "antilog"(-5.4) = 3.98 xx 10^(-6)`

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