The qualitative estimation of the melting point for an unknown compound suspected to be acetanilide that is mixed with 10 % weight of naphthalene should be determined. Concept introduction: Temperature at which an element changes from solid state to liquid state is known as melting point or liquefaction point. At the melting point, both solid and liquid phase coexist in equilibrium. It depends on the pressure and is normally defined at the standard pressure ( 1 atm ) .

Question

4-bromobenzoic acid (1.0 g) is dissolved in 20 ml dichloromethane. After addition to a separatory funnel, the dichloromethane solution is treated with 20 ml 3.0 M NaOH solution. After the layers are separated, which layer(s) will contain an organic compound (non-solvent)? What would happen if the aqueous layer is treated with 20 ml 3.0 M HCl?

Answer 1

Question

Chapter 3, Problem 8Q

Interpretation Introduction

Interpretation:

The qualitative estimation of the melting point for an unknown compound suspected to be acetanilide that is mixed with 10 % weight of naphthalene should be determined.

Concept introduction:

Temperature at which an element changes from solid state to liquid state is known as melting point or liquefaction point. At the melting point, both solid and liquid phase coexist in equilibrium. It depends on the pressure and is normally defined at the standard pressure (1 atm).

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