Question

Select which of the following statements regarding miscibility is correct.

a) Experiment shows that CH3(CH2)4CHO is basically immiscible in water! This experimental result may not have been predicted as they are both polar species.

b) If chemical species are miscible in one another, the interactions between the two species must be weaker than those in the pure samples.

c) NaCl is insoluble in hexane; this means that the ionic forces in NaCl must be stronger than the ion-induced dipole forces that can occur between NaCl and CH3(CH2)4CH3.

d) If chemical species are miscible in one another, the interactions between them cannot be weak forces like london dispersion forces.

Answer 1

a) Experiment shows that CH3(CH2)4CHO is basically immiscible in water! This experimental result may not have been predicted as they are both polar species. CORRECT; since immiscible substances are commonly, not both polar

b) If chemical species are miscible in one another, the interactions between the two species must be weaker than those in the pure samples.FALSE; since they break in order to interact between each othe

c) NaCl is insoluble in hexane; this means that the ionic forces in NaCl must be stronger than the ion-induced dipole forces that can occur between NaCl and CH3(CH2)4CH3. TRUE; since NaCl will remain in crystal / ionic bonding

d) If chemical species are miscible in one another, the interactions between them cannot be weak forces like london dispersion forces.FALSE, since nonpolar-nonpolar are usually going to interact as well