SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mol dm-3 aqueous solution of acid W has a pH of 4.5. Which of the following statements is true for acid W?
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Acid W has a high degree of dissociation in water.
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Acid W has a high melting point.
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Aqueous solution of acid W has a low concentration ofhydrogen ions
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Acid W is a diprotic acid
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Explanation:
Detailed explanation-1: -Lower pH number means stronger acid, higher pH number means stronger base.
Detailed explanation-2: -The pH scale starts from 0 and ends at 14, 0 indicating most acidic and 14 indicating most basic. The pH value of 7 indicates neutrality. Hence lower the pH, weaker the base and higher the pH, weaker the acid. Therefore, the correct statements are (ii) and (iv).
There is 1 question to complete.