An acid is a chemical substance that yields hydrogen ions (H+) when dissolved in water. The pH of an acid or base is defined as the negative logarithm of the hydrogen ion concentration, i.e., pH = - log [H+]
Among the pH values, what will be the most probable pH value of an acidic solution having the least concentration of hydrogen ions?
a) 2
b) 3
c) 4
d) 5
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2
Answer:
d) 5
Explanation:
because less is the concentration of H+ ions more is the pH
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