the equation for the ph of a substance is ph = -logh+, where h+ is the concentration of hydrogen ions. which…

the equation for the ph of a substance is ph = -logh+, where h+ is the concentration of hydrogen ions. which equation models the concentration of hydrogen ions (h+) of a solution whose ph is 7.2? h+=log7.2 h+= -log7.2 h+=10^-7.2 h+=10^7.2

the equation for the ph of a substance is ph = -logh+, where h+ is the concentration of hydrogen ions. which equation models the concentration of hydrogen ions (h+) of a solution whose ph is 7.2? h+=log7.2 h+= -log7.2 h+=10^-7.2 h+=10^7.2

Answer

Explanation:

Step1: Start with given formula

Given $\text{pH}=-\log[\text{H}^+]$. We know $\text{pH} = 7.2$.

Step2: Rearrange the formula for $[\text{H}^+]$

First, substitute $\text{pH}=7.2$ into the formula: $7.2 =-\log[\text{H}^+]$. Then multiply both sides by - 1 to get $-7.2=\log[\text{H}^+]$. By the definition of a logarithm, if $\log_{10}a = b$, then $a = 10^b$. Here, since the base of the common - logarithm is 10, we have $[\text{H}^+]=10^{-7.2}$.

Answer:

$[\text{H}^+]=10^{-7.2}$