2 or 3.. or both would be nice. Based upon which characteristic physical propert

Question

2 or 3.. or both would be nice. Based upon which characteristic physical property of the solvent would you make your choice? Therefore, based on the property that you determined in part i) above, which solvent between methylent chloride and acetone would you use for the purpose of extraction of an organic compound from an organic compound from an aqueous solution? Explain your answer What volume in mL of an organic solvent must be used to remove 60 % of an organic compound present in 100. ml. of an aqueous solution with only one extraction? Given K_organic solvent/water = 0. 3 In the respective blank provided to the left of each pair of compounds insert the correct letter corresponding to the aqueous solution that would be used to separate the pair by means of an extraction procedure or technique. (If the two substances cannot be separated by the extraction technique using any of the following aqueous solutions then insert letter "E" in the blank). H_2O HCI NaOH NaHCO_2 none of the preceding four aqueous sob

Explanation / Answer

For now, I'll answer question 3.

In the first pair, we have an acid and a neutral component. the best way to separate a carboxilic acid from a binary mixture, it's to use an extraction with a weak base. In this case, the NaHCO3 will do so. This would react with the COOH group and form the COONa. So the correct answer would be D. You may think to use a strong base like NaOH but this would react with the ketone, and will form another product.

In the second pair, we have a carboxilic acid and a phenol group. In other words, a strong acid and a weak acid. If we use a strong base like naOH, in the aqueous solution, both of the compound will be attached to it. But instead, if we use a weak base like NaHCO3, only the strong acid will react here, leaving the phenol in the organic layer. So once again, the correct option would be D.

Finally in the last pair, we have two neutral compounds, so these two components would have to be extracted by other means (like distillation) because it will not happen anything in aqueous acid or base solution to do the extration. The correct option here would be E.

Hope this helps

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