Which of these substances has the highest poh? 0.10 m hcl, ph = 1 0.001 m hno3, ph = 3 0.01 m naoh, ph = 12

0.10 M HCl, pH = 1  

Explanation: pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxide ion concentration.

1. 0.10 M , pH=1

2. 0.001 M , pH=3

3. 0.01 M , pH=12

Thus 0.10 M HCl, pH = 1  has highest pOH.

i think its c if i'm wrong

it would be c. predictability