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For which of the following solution must...

For which of the following solution must we consider the ionisation of water when calculating the pH or pOH:

A

`3xx10^(-6)MHNO_(3)`

B

`0.10g` HCl in `1.0L` of solution

C

`0.0080g` of `NaOH` in `0.5L` of solution

D

`1xx10^(-7)Mca(OH)_(2)`

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The correct Answer is:
a,d
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