BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1
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7
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>9
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14
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Detailed explanation-1: -A lower pH means that there are more hydrogen ions in the liquid, whereas a higher pH indicates fewer hydrogen ions in the liquid. In simple terms, pH is a scale from 1 to 14 that measures the acidity or alkalinity of a liquid. In the middle of the scale is pure distilled water, with a neutral pH of 7.
Detailed explanation-2: -You must also keep in mind that water (Deionised Water, or Distilled Water) do not have a pH of 7. As soon as the water comes in contact with air, CO2 gas starts to dissolve it, forming carbonic acid (H2CO3). This results in the pH being lower than seven.
Detailed explanation-3: -In extremely pure water, the number of H+ and OH-would always be equal, and the pH would be neutral at 7. There are no other substances present to influence the pH in either the acidic or alkaline direction.