GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How much stronger is a substance with a pH of 2 when compared to substance with a pH of 5?
A
10x
B
100x
C
1000x
D
10, 000x
Explanation: 

Detailed explanation-1: -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-2: -Hence, the aqueous solution with pH = 2 is 100 times more acidic than the aqueous solution with pH = 4.

Detailed explanation-3: -A pH less than 7 is acidic. A pH greater than 7 is basic. The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6.

Detailed explanation-4: -A solution of pH 3 will have 100 times more H+ (it is 100 times more acidic) than a solution of pH 5.

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