1. Suppose a reaction mixture, when diluted with water, afforded 300 mL of an aq

Question

1. Suppose a reaction mixture, when diluted with water, afforded 300 mL of an aqueous solution of 30 g of the reaction product malononitrile, CH2(CN)2, which is to be isolated by extraction with ether. The solubility of malononitrile in ether at room temperature is 20.0 g per 100 mL and in water is 13.3 g per 100 mL. What weight of ma1onOflitite Would be recovered by extraction with (a) three 100-mL portions of ether; (b) one 300-mL portion of ether? Suggestion: For each extraction let x equal the weight extracted into the ether layer. In case (a) the concentration in the ether layer is xii00, and in the water layer is (30 - x)/300; the ratio of these quantities is equal to k = 20/13.3.

Explanation / Answer

Hello!

2. because you create a state of lower pressure inside the funnel of separation and therefore the liquid is not allowed to be drained through the stopcock.

PD. Do no post multiple questions.

My regards!

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