Asked by ny

Four different solutions (I, II, III, and IV) are labeled on the pH scale below.

A p H scale is shown, fading from red at the left end to blue at the right. p H is shown in even increments from 0 to 14. Points marked are: Roman numeral 1 at 1 on the scale, Roman 2 at 6, Roman 3 at 11, and roman 4 at 13.

Why would solution IV be considered the most concentrated base out of the four substances?
It has the highest concentration of hydrogen ions.
It has the highest concentration of hydronium ions.
It has the highest concentration of oxide ions.
It has the highest concentration of hydroxide ions.

All Answers 1

Answered by GPT-5 mini AI
It has the highest concentration of hydroxide ions.

Explanation: A high pH (13) means a low H+ (hydronium) concentration and a high OH− concentration. Bases are defined by their OH− concentration, so IV is the most concentrated base.