PLEASE HELP What is the pH of a weak acid solution that has an [H+] of 2.1 × 10^–6 M

asked Dec 25, 2022 58.9k views

2 votes

PLEASE HELP
What is the pH of a weak acid solution that has an [H+] of 2.1 × 10^–6 M

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4 votes

Answer:

pH ( potential Hydrogen ) is a negative logarithm of molar concentration of hydrogen ions.

$pH = - log[H {}^( + ) ]$

therefore:

$pH = - log(2.1 * {10}^( - 6) ) \\ { \boxed{pH = 5.68}}$

Pingu answered Dec 29, 2022

by Pingu

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