which of these substances has the highest poh?\n0.10 m hcl, ph = 1\n0.001 m hno₃, ph = 3\n0.01 m naoh, ph = 12

Explanation:

Step1: Recall the relationship between pH and pOH

We know that $pH + pOH=14$.

Step2: Calculate pOH for each option

For 0.10 M HCl with pH = 1

$pOH = 14 - pH=14 - 1=13$.

For 0.001 M HNO₃ with pH = 3

$pOH = 14 - pH=14 - 3 = 11$.

For 0.01 M NaOH with pH = 12

$pOH = 14 - pH=14 - 12=2$.

Answer:

0.10 M HCl, pOH = 13