Question

# Account for the following: State the relation between the hydrogen ion concentration of an aqueous solution and its $\mathrm{pH}$ ?

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Solution

## Relation between the Hydrogen ion concentration of an aqueous solution and its $\mathrm{pH}$:$\mathrm{pH}$ is denoted as the negative logarithm of ${\mathrm{H}}^{+}$(Hydrogen ion) concentration in an aqueous solution, which is why the meaning of the name pH is defined as the power of hydrogen.A pH scale is basically used as a tool for measuring the acid-base strength of acids and bases, for which the scale ranges from $0-14.$The relation between the hydrogen ion concentration of an aqueous solution and its $\mathrm{pH}$ can be given as: $\mathrm{pH}=-\mathrm{log}\left[{\mathrm{H}}^{+}\right]$From this equation, we can say that the value of $\mathrm{pH}$ is inversely proportional to the hydrogen ion concentration in an aqueous solution.hence, the value of $\mathrm{pH}$ increases with the decrease in the concentration of the hydrogen ion, whereas it decreases with the increase in the concentration of the hydrogen ion.Hence, the hydrogen ion concentration of an aqueous solution and its $\mathrm{pH}$ are inversely related to each other.

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