select the correct answer. what is the ph of a solution with a hydronium (h₃o⁺) concentration of 5.6×10⁻⁹ m…

select the correct answer. what is the ph of a solution with a hydronium (h₃o⁺) concentration of 5.6×10⁻⁹ m? use the table to help you. a. 7.00 b. 8.25 c. 9.00 d. 9.76

select the correct answer. what is the ph of a solution with a hydronium (h₃o⁺) concentration of 5.6×10⁻⁹ m? use the table to help you. a. 7.00 b. 8.25 c. 9.00 d. 9.76

Answer

Explanation:

Step1: Recall pH formula

The formula for pH is $pH = -\log[H_3O^+]$.

Step2: Substitute the given value

We are given $[H_3O^+]=5.6\times 10^{-9}\ M$. So, $pH = -\log(5.6\times 10^{-9})$. Using the logarithm property $\log(ab)=\log a+\log b$, we have $pH=-(\log(5.6)+\log(10^{-9}))$. Since $\log(10^{-9})=- 9$ and $\log(5.6)\approx0.75$, then $pH=- (0.75 - 9)$.

Step3: Calculate the pH

$pH=9 - 0.75=8.25$.

Answer:

B. 8.25