a) Into a separatory funnel is poured 50 mL of CH3CH2Br (bromoethane), a water-i

Question

a) Into a separatory funnel is poured 50 mL of CH3CH2Br (bromoethane), a water-insoluble compound with a density of 1.460 g/mL, and 50 mL of water. The funnel is stoppered and the mixture is shaken vigorously. After standing, two layers separate. Which substance is in which layer? Explain.

b) Into the same funnel is poured carefully 50 mL of hexane (density = 0.660 g/mL) so that the other two layers are not disturbed. The hexane forms a third layer. The funnel is stoppered and the mixture is shaken vigorously. After standing, two layers separate. Which compound(s) are in which layer?

Explanation / Answer

The top layer is water and the bottom layer is bromoethane...

Because bromoethane is more dense than water

Top layer : water Bottom layer: Hexane + CH3CH2Br

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