Write true or false for the following statement:
Higher is the hydronium ion concentration,higher is the $pH$ value.

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(FALSE) The statement is False.
The $pH$ of a solution is defined as the negative logarithm of the hydronium ion concentration,expressed as $pH = -\log[H_3O^+]$.
Because of the negative sign,as the concentration of hydronium ions $[H_3O^+]$ increases,the $pH$ value decreases.
Therefore,a higher hydronium ion concentration corresponds to a lower $pH$ value.

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