mixed about the 5grams of benzois acid and sugar. divide the mixture into two equal portions . to thheh first portion add 20ml of water. shake vigorously and filter. examine the residue and compare with the original sample. heat the filter to dryness and identify the residue. to the second portion add 10ml of ethanol. shake the mixture and filter. examine the residue and compare to the original sample. heta the filtrate to dryness and identify the residue. what will be the observation?

please anyone can answer my question..

Is this a dry lab? If you did this in the lab you should know what you happened.

Based on the given instructions, we can predict the observations in each step:

1. Mixing 5 grams of benzoic acid and sugar: The mixture will consist of benzoic acid and sugar particles combined together.

2. Dividing the mixture into two equal portions: We will have two samples of the mixture, each containing half of the original mixture.

3. Adding 20ml of water to the first portion: The water will dissolve the sugar, while the benzoic acid will remain undissolved.

4. Shaking vigorously and filtering the first portion: The mixture will be vigorously shaken to ensure thorough mixing, and then filtered. The residue left on the filter paper will contain undissolved benzoic acid.

5. Examining the residue and comparing it with the original sample: The residue obtained from the first portion will be compared to the original mixture. Since only the benzoic acid is insoluble in water, the residue obtained should visually resemble the original benzoic acid particles.

6. Heating the filter paper with the residue from the first portion to dryness: The filter paper with the residue will be heated until all the water evaporates. After complete evaporation, only benzoic acid will remain as a solid residue.

7. Adding 10ml of ethanol to the second portion: Ethanol will dissolve both the benzoic acid and sugar.

8. Shaking the mixture and filtering the second portion: The mixture will be shaken thoroughly, allowing the ethanol to dissolve the benzoic acid and sugar. The resultant solution will then be filtered.

9. Examining the residue and comparing it with the original sample: The residue obtained from the second portion will be compared to the original mixture. Since both the benzoic acid and sugar are dissolved in ethanol, there should not be any visible residue left on the filter paper.

10. Heating the filtrate with the residue from the second portion to dryness: The filtrate obtained from the second portion contains dissolved benzoic acid and sugar in ethanol. By heating the filtrate, the ethanol will evaporate, leaving behind a solid residue consisting of benzoic acid and sugar.

In summary, the observations would be:
- In the first portion, the benzoic acid will remain and the sugar will dissolve in water.
- In the second portion, both the benzoic acid and sugar will dissolve in ethanol.
- After heating, the solid residue in the first portion will be benzoic acid, while the residue in the second portion will be a mixture of benzoic acid and sugar.