Question

pH of a soft drink is 5. Its hydrogen ion concentration is

Answer 1

Concept:

A pH scale is a tool for determining the concentrations of acids and bases. The scale runs from 0 to 14. Acidic solutions have a pH value ranging from 0 to 7 on the pH scale, whereas basic solutions have a pH value ranging from 7 to 14 on the pH scale.

Find:

The hydrogen ion concentration in the soft drink.

Solution:

$pH=-log_{10}^{[H^+]}\\\\{[H^+]} = 10^{-pH}\\\\{[H^+] = 10^{-5} mol/lit$

Hence, the hydrogen ion concentration in the soft drink is $10^{-5} mol/lit$.

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Answer 2

Answer:

If pH of soft drink is 5, then hydrogen ion concentration is 0.00005 or 10⁻⁵ M.

Explanation:

We know pH = -log[H⁺]

and given pH is 5,

$Thus, [H^{+} ] = 10^{-pH}$

$[H]^{+} = 10^{-5}$

Thus, hydrogen ion concentration is 0.00005 or 10⁻⁵ M.