GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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8
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14
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7.8
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11.6
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Detailed explanation-1: -A pH less than 7 indicates an acidic solution while a pH of more than 7 indicates a basic solution. A pH close to 1 indicates a very strong acid while a pH just below 7 indicates the presence of a weak acid. Strong bases on the other hand have a pH close to 14 while weak bases have a pH just above 7.
Detailed explanation-2: -Zn(OH)2 will be the weakest base.
Detailed explanation-3: -We now see that a weak base placed in a relative acidic environment (again human pH = 7.4) is mostly in the ionized form.
Detailed explanation-4: -Based on the pH values, acidic and basic solutions can be further sub-divided into strong and weak acid and base. Thus, the pH value range of a weak base is 7.1 to 10 whereas a strong base is 10.1 to 14.