GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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acid 5, neutral 7, alkaline 9
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acid 1, neutral 3, alkaline 5
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acid 7, neutral 8, alkaline 9
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acid 6, neutral 8, alkaline 10
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Detailed explanation-1: -As this diagram shows, pH ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).
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: -It happens that at pH 7, the concentrations of H+ and OH-are equal. This is why pH 7 is considered the neutral pH. Below pH 7, the concentration of H+ is greater than the concentration of OH-, making the water acidic. Above pH 7, the concentration of OH-is greater than the concentration of H+, making the water basic.
Detailed explanation-4: -pH value from 6.5 to 7.5 is considered as neutral. pH value over 7.5 is alkaline. pH value less than 6.5 is acidic.