SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4
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5.6
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8
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13
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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: -For example a substance with pH = 8 is a very weak base, but a substance with pH = 3 is a strong acid. The closer you are to neutral, the weaker your substance is, acidic or basic. A common way to determine the pH of a substance is to use special chemicals called pH indicators.
Detailed explanation-3: -Is a pH of 8 more basic or less basic than a pH of 6? 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.
Detailed explanation-4: -Alkaline water has a pH of 8 or above. Strongly alkaline substances, such as lye, can have a pH of 14. Pure water has a pH of 7 and is considered “neutral” because it has neither acidic nor basic qualities.