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?\no h+ = log7.2\no h+ = -log7.2\no h+ = 10^(-7.2)\no 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?\no h+ = log7.2\no h+ = -log7.2\no h+ = 10^(-7.2)\no h+ = 10^(7.2)

Answer

Explanation:

Step1: Given the pH formula

The formula for pH is $\text{pH}=-\log[\text{H}^+]$. We are given that $\text{pH} = 7.2$, so $7.2=-\log[\text{H}^+]$.

Step2: Isolate the logarithm

Multiply both sides of the equation by - 1. We get $-7.2=\log[\text{H}^+]$.

Step3: Convert from logarithmic to exponential form

By the definition of logarithms, if $y = \log_{10}x$, then $x = 10^y$. Here, since $-7.2=\log[\text{H}^+]$, we have $[\text{H}^+]=10^{-7.2}$.

Answer:

$[\text{H}^+]=10^{-7.2}$ (corresponding to the third option)