BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2
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20
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10
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100
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Detailed explanation-1: -A solution of pH 3 will have 100 times more H+ (it is 100 times more acidic) than a solution of pH 5.
Detailed explanation-2: -The pH scale is logarithmic, meaning that an increase or decrease of an integer value changes the concentration by a tenfold. For example, a pH of 3 is ten times more acidic than a pH of 4.
Detailed explanation-3: -The lower a substance’s pH, the more acidic it is. Each whole pH value below 7 (the neutral point) is ten times more acidic than the next higher value.
Detailed explanation-4: -For example a pH of 2 is 10 times more acidic than a pH of 3 and 1000 times more acidic than a pH of 5. A pH of 11 is 10 times more alkaline than a pH of 10. So values above 7 indicate alkalinity which increases as the number increases, 14 being the most alkaline.
Detailed explanation-5: -Since a pH of 3 is three numbers higher than a pH of 6, we can find the change in acidity by taking 10 to the third power. The solution with a pH of 3 is 1000 times more acidic than the solution with a pH of 6.