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Question

Calculate the pH of a solution which is 101M in HCl and 103M in CH3COOH [Ka=2×103]

A
2
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B
4
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C
1
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D
3
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Solution

The correct option is C 1
H+ ion can be considered completely from HCI due to less dissociation of CH3COOH (because of common ion effect by H+ of HCI, α << 1) and its low conc. So, [H+]=101M
pH=1

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