Question

1. Why does sodium benzoate dissolve so well in water, whereas benzoic acid does not? 2....

1. Why does sodium benzoate dissolve so well in water, whereas benzoic acid does not?

2. Explain how the two compounds (benzyl alcohol and benzoic acid) partition between ether and a NaOH solution in the manner that they do. HINT: Why are they soluble in the layers that they are in, and not the other?

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Answer #1

1. sodiumbenzoate is a salt. It is pure ionic compound. So it ionizes very well in water and solubilise easily. Where as benzoic acid is organic acid compound, it will not soubilise compleatly in water.

2.benzoic acid will partition into aqueous NaOH solution and benzyl alcohol into the ether layer.

Because, benzoic acid make salt as sodium benzoate with NaOH solution. Benzoic acid is an acid and it reacts with NaOH base to form salt. It will soluble in water

Benyl alcohol is organic compound. It is non polaric in nature. It will soluble in non polar solvent like ether.

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