The best indicator for the detection of the end point in a titration of a weak acid and a strong base would be Phenolphthalein (8.2 to 10).

Here's why:

1. In a titration of a weak acid with a strong base, the reaction will produce a salt and water. The salt that is produced can hydrolyze to produce a basic solution.

2. At the equivalence point, all of the weak acid has reacted with the strong base, so the solution will be basic due to the hydrolysis of the salt.

3. Therefore, an indicator that changes color in the basic range should be used.

4. Phenolphthalein changes color in the pH range of 8.2 to 10, which is in the basic range. Therefore, it is the best choice among the given indicators for this titration.

5. The other indicators (Methyl orange, Methyl red, and Bromothymol blue) change color in a pH range that is either acidic or near neutral, so they would not accurately indicate the end point of this titration.

Question

The best indicator for the detection of the end point in a titration of a weak acid and a strong base would be Phenolphthalein (8.2 to 10).

Here's why:

1. In a titration of a weak acid with a strong base, the reaction will produce a salt and water. The salt that is produced can hydrolyze to produce a basic solution.

2. At the equivalence point, all of the weak acid has reacted with the strong base, so the solution will be basic due to the hydrolysis of the salt.

3. Therefore, an indicator that changes color in the basic range should be used.

4. Phenolphthalein changes color in the pH range of 8.2 to 10, which is in the basic range. Therefore, it is the best choice among the given indicators for this titration.

5. The other indicators (Methyl orange, Methyl red, and Bromothymol blue) change color in a pH range that is either acidic or near neutral, so they would not accurately indicate the end point of this titration.

Knowee AI · Accepted Answer

The best indicator for the detection of the end point in a titration of a weak acid and a strong base would be Phenolphthalein (8.2 to 10).

Here's why:

1. In a titration of a weak acid with a strong base, the reaction will produce a salt and water. The salt that is produced can hydrolyze to produce a basic solution.

2. At the equivalence point, all of the weak acid has reacted with the strong base, so the solution will be basic due to the hydrolysis of the salt.

3. Therefore, an indicator that changes color in the basic range should be used.

4. Phenolphthalein changes color in the pH range of 8.2 to 10, which is in the basic range. Therefore, it is the best choice among the given indicators for this titration.

5. The other indicators (Methyl orange, Methyl red, and Bromothymol blue) change color in a pH range that is either acidic or near neutral, so they would not accurately indicate the end point of this titration.

The best indicator for the detection of end point in titration of a weak acid and a strong base is :-Methyl orange (3.1 to 4.4)Methyl red (4.2 to 6.3)Bromothymol blue (6 to 7.6)Phenolphthalein (8.2 to 10)

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