The following diagrams represent aqueous solutions of three acids, HX, HY, and HZ. The water molecules have been omitted for clarity, and the hydrated proton is represented as H+ rather than H3O+.(c) Which solution would have the highest pH?

검증된 단계별 안내

Identify the number of dissociated H+ ions in each solution. The more H+ ions present, the stronger the acid and the lower the pH.

Count the number of H+ ions in the HA solution.

Count the number of H+ ions in the HB solution.

Count the number of H+ ions in the HC solution.

Compare the number of H+ ions in each solution to determine which has the fewest H+ ions, indicating the highest pH.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Acid Strength

Acid strength refers to the ability of an acid to donate protons (H+) in solution. Strong acids completely dissociate in water, leading to a higher concentration of H+ ions, while weak acids only partially dissociate. Understanding the strength of the acids represented in the diagrams is crucial for determining which solution will have the highest pH.

pH Scale

The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14. A pH less than 7 indicates an acidic solution, while a pH greater than 7 indicates a basic solution. The pH is inversely related to the concentration of H+ ions; thus, a solution with fewer H+ ions will have a higher pH.

Concentration of Acids

The concentration of an acid in solution affects the number of H+ ions available. In the diagrams, the number of colored spheres representing each acid indicates their concentration. A solution with a lower concentration of H+ ions will correspond to a higher pH, making it essential to compare the concentrations of HX, HY, and HZ to determine which has the highest pH.