BIOCHEMISTRY
PH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4
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12
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7
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10
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Detailed explanation-1: -The range goes from 0-14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
Detailed explanation-2: -As you can see from the pH scale above, pure water has a pH value of 7. This value is considered neutral-neither acidic or basic.
Detailed explanation-3: -pH 7 is not always neutral The answer is no, since what defines a neutral solution is the presence of an equal number of moles of H+ and OH− ions, a situation that may occur at any pH value. For example, you could have a solution of just H+ ions at a concentration of 10−7 mol L−1 but this would clearly not be neutral.
Detailed explanation-4: -pH is measured on a scale of 0 to 14. On this scale, a pH value of 7 is neutral, which means it is neither acidic nor basic. A pH value of less than 7 means it is more acidic, and a pH value of more than 7 means it is more basic.