1. compare how the three solutions react to the addition of an acid. 2. compare

Question

1. compare how the three solutions react to the addition of an acid. 2. compare how the three solutions react to the addition of a base. 3. compare how the three solutions react to the addition of distilled water. plz explain me. thanks. Table A: Water Initial pH after pH after pH after Change in pH addition of addition ofaddition of pH 0.IM HNO, 0.1M NaOH distilled water Beaker A Beaker B Beaker C 2. Table B: Buffer Initial pH pH after pH after pH after Change in addition of addition of addition of pH 0.1M HNO 0.1M NaOH distilled water Beaker B Beaker C Table B: Acid Initial pHpH after pH after pH after Change in addition ofaddition of addition of pH 0.1M HNO 0.1M NaOH distilled water Beaker A Beaker B47 Beaker C 4

Explanation / Answer

Hello. I cannot say exactly where and how you might be wrong because I do not have a clear idea about the experiment you were conducting and the experimental conditions for the same. I will just point out some irregularities that I observed in the data.

1. In table A, the sample you are using is water. But water is considered neutral and cannot have an initail pH of 5. A pH of 5 means it is already acidic. Other observation trends seem logical in the first table. There is just a calculation error in the difference in pH after the addition of acid.

2. Table 2 looks correct. The pH of a buffer is not supposed to change after the addition of acids or bases.

3. In table 3, the pH of the sample cannot decrease after addition of a base. A base will push the acid more towards neutrality and the pH closer to 7 not away from it. Also in case of distilled water addition, the pH of acid should not change. It should remain what it previously was. Even if there is a change, it will be very small and not as much as observed when an acid is added.

I hope this was of use.

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