Green checks and red X's are not displayed for this question. A student has two solutions of 0.10 M acid labeled just as A and B. The pH of one solution was found to be 1.02 and the other 4.73. Both are weak acids. One is a strong acid and one is a strong base. One is a strong acid and one is a weak base. One is a weak acid and one is a weak base. Both are strong acids. One is a strong acid and one is a weak acid. You cannot tell the strength of an acid from pH readings. You cannot tell the strength of an acid without measuring the pH of diluted solutions. HX and HY are weak acids, but HX is a stronger acid than HY. What result would you expect if you measured the pH of 0.1 M solutions of HX and HY

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30-10-2021
Chemistry

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Green checks and red X's are not displayed for this question. A student has two solutions of 0.10 M acid labeled just as A and B. The pH of one solution was found to be 1.02 and the other 4.73. Both are weak acids. One is a strong acid and one is a strong base. One is a strong acid and one is a weak base. One is a weak acid and one is a weak base. Both are strong acids. One is a strong acid and one is a weak acid. You cannot tell the strength of an acid from pH readings. You cannot tell the strength of an acid without measuring the pH of diluted solutions. HX and HY are weak acids, but HX is a stronger acid than HY. What result would you expect if you measured the pH of 0.1 M solutions of HX and HY

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pstnonsonjoku pstnonsonjoku · Answer 1 · 2021-11-02T11:19:45+01:00

The pH of acid solutions does not indicate the strength of the acid. Since HX and HY has the same concentration, HX will dissociate to a greater extent and have a lower pH than HY.

The pH of an acid measures the concentration of hydronium ion in solution. The concentration of hydronium ion in solution also depends on the strength of the acid. A strong acid dissociates completely in solution while a weak acid does not dissociate completely in solution.

The pH only indicate the concentration of hydronium ions in solution but says nothing about the strength of the acid. The strength of the acid depends on the nature of the acid, A strong acid could be so diluted that it has a high pH

In the second question, since HX is stronger than HY, at the same concentration, the pH of HX will be lower than the pH of HY because there will be more hydrogen ions available in the HX solution than in the HY solution.

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