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Chapter 15: Problem 124

Based solely on concentrations, when is an aqueous solution judged to be acidic? Give two answers to this question.

Short Answer

Expert verified
An aqueous solution is judged to be acidic based on two main aspects: hydrogen ion (H+) concentration and the pH scale. 1. The solution is considered acidic when the concentration of hydrogen ions (H+) is greater than the concentration of hydroxide ions (OH-), that is, when \([H^+] > [OH^-]\). 2. Using the pH scale, an aqueous solution is judged to be acidic when its pH is less than 7.

Step by step solution

01

Explanation of an Acidic Solution

An aqueous solution is considered acidic when it has a higher concentration of hydrogen ions (H+) than hydroxide ions (OH-). In other words, the solution has an excess of H+ ions compared to OH- ions, resulting in acidic properties.
02

Answer 1: Based on H+ concentration

An aqueous solution is judged to be acidic when the concentration of hydrogen ions (H+) is greater than the concentration of hydroxide ions (OH-). That is, when \([H^+] > [OH^-]\).
03

Answer 2: Based on pH scale

The pH scale is a measure of the acidity or alkalinity of a solution, ranging from 0 to 14. A solution with a pH value less than 7 is considered acidic. So, an aqueous solution is judged to be acidic when its pH is less than 7.

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Most popular questions from this chapter

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