interactive example calculating ph\ncalculate the ph of a 7.2×10⁻⁴ m oh⁻ solution at 25°c.\nhow do we get…

interactive example calculating ph\ncalculate the ph of a 7.2×10⁻⁴ m oh⁻ solution at 25°c.\nhow do we get there?\nwhat is the ph of the solution?\nph =

interactive example calculating ph\ncalculate the ph of a 7.2×10⁻⁴ m oh⁻ solution at 25°c.\nhow do we get there?\nwhat is the ph of the solution?\nph =

Answer

Explanation:

Step1: Calculate pOH

pOH is calculated using the formula $pOH = -\log[OH^-]$. Given $[OH^-]=7.2\times 10^{-4}\ M$, so $pOH=-\log(7.2\times 10^{-4})$. $pOH = 3.14$

Step2: Calculate pH

At $25^{\circ}C$, the relationship between pH and pOH is $pH + pOH=14$. So $pH = 14 - pOH$. $pH=14 - 3.14 = 10.86$

Answer:

$10.86$