if the h⁺ of a solution is 1 x 10⁻³ m, the ph is

Answer:

A. 3

Explanation:

Step1: Recall pH formula

$pH = -\log[H^+]$

Step2: Substitute the given value

$pH=-\log(1\times 10^{- 3})$

Step3: Calculate the logarithm

Since $\log(1\times 10^{-3})=-3$, then $pH=-(-3) = 3$