Question

# Choose the correct from the following:(i) Salt of a strong acid and a strong base are neutral with pH value of 7.(ii) Salt of a strong acid and a weak base are basic with pH value more than 7.(iii) SaIt of a weak acid and a strong base are acidic with pH value less than 7.

A
(i) and (ii)
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B
(ii) and (iii)
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C
(i)
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D
(i) and (iii)
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Solution

## The correct option is C (i) 1. Salt of a strong acid and a weak base are acidic with pH value less than 7 because acid is strong which retain the pH value less then 7.2. Salt of a weak acid and strong base are basic with pH value more than 7 because the base is strong hence pH of whole solution will be more than 7.3. Salt of a strong acid and strong base is neutral because both are strong and cancels strong effects of each other, hence the pH will be 7.

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