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Question

0.001M NH4Cl aqueous solution has pH:

A
6.127
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B
7.126
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C
2.167
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D
1.267
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Solution

The correct option is A 6.127
NH4Cl is salt formed from weak base NH4OH and strong acid HCl.

pH=12[pKwpKalogc]

=12[144.7447log(0.001)]

=6.127

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