OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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strong acid
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weak base
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strong base
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weak acid
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Detailed explanation-1: -Thus, the pH value range of a weak base is 7.1 to 10 whereas a strong base is 10.1 to 14.
Detailed explanation-2: -All substances can be classified as neutral (with a pH of about 7), basic (pH greater than 7), or acidic (pH less than 7), and the pH tells us how strong or weak that substance is as well. For example a substance with pH = 8 is a very weak base, but a substance with pH = 3 is a strong acid.
Detailed explanation-3: -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-4: -Solutions having pH values of 11, 12, 13 and 14 are usually considered strong bases.
Detailed explanation-5: -A weak base is less protonated, leading to a lower pH and a lower percentage protonated.