BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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more H ions than OH ions
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more OH ions than H ions
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equal number of H and OH ions
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None of these.
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Detailed explanation-1: -This means that the molar concentrations of H + and OH-are approximately 10-7 each in pure water. Therefore, a H + concentration of 10-7 M has a pH of 7.0. In pure water, there are always equal numbers of H + and OH-, and the pH is defined to be neutral.
Detailed explanation-2: -[H+]=10-7, which we call a pH of 7. In the same way, a solution with a pH of 5 contains 10-5mol/l of hydrogen ions, a solution with a pH of 6 contains 10-6mol/l of hydrogen ions, while the solution with a pH of 7 contains 10-7mol/l of hydrogen ions.
Detailed explanation-3: -Answer and Explanation: The pH of the compound or substance with the same number of hydroxide and hydrogen ions is 7. The pH 7 is significantly the neutral pH which is the pH of the pure water.
Detailed explanation-4: -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).