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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.

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Answer:

It has the highest concentration of hydroxide ions.

Explanation:

The pH scale is a measure of the acidity or alkalinity of a substance. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.

Similarly, numerical values from left to right along the pH scale shows decreasing hydrogen ion concentration and increasing hydroxide ion concentration. As the value of pH increases, the hydroxide concentration increases too. A pH of 13 reflects a very high concentration of hydroxide ions present in solution.

Answer:

Its D on edge

Explanation:

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