OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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acidic
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basic
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neutral
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None of the above
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Detailed explanation-1: -pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).
Detailed explanation-2: -Anything with a pH level above 7 indicates that the substance is alkaline. As the pH value increases, so does the alkaline level of the substance. For example, lemon juice has a pH level of 2, coffee may have a pH level of 5 and rainwater has a value of 5.5.
Detailed explanation-3: -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-4: -If the pH of a solution is less than 7, the solution is called acidic; In an acidic solution, then, the concentration of hydrogen ions is greater than the concentration of hydroxide ions. if the pH is about 7, the solution is neutral; if the pH is greater than 7, the solution is called basic.
Detailed explanation-5: -At pH 7, the substance or solution is at neutral and means that the concentration of H+ and OH-ion is the same. If pH < 7, the solution is acidic.