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Byju's Answer
Standard XII
Chemistry
Electrolytes
pH is a measu...
Question

pH is a measure of the concentration of hydrogen ions in a solution. The lower the pH, the higher the concentration of hydrogen ions, and the more acidic a solution is. Alkaline or basic solutions have lower concentrations of hydrogen ions and a pH above 7. Which of the following substances has the highest pH value?

A
Pineapple juice
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B
Caustic soda
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C
Wine
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D
Blood
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Solution

The correct option is A Caustic soda

Sodium hydroxide has the formula, NaOH and is also known as caustic soda or lye. It is extremely alkali and has a ph of 12. It is one of the strongest alkaline chemicals.


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Q. Strength of an acid solution or a basic solution can be determined by knowing the hydrogen ion concentrations in them, using a pH scale.
(i) Neutral solution has pH 7.
(ii) Acidic solution has pH less than 7.
(iii) Basic solution has pH more than 7.
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(iii) Basic solution has pH more than 7.
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