Which of these pairs of substances is likely to be miscible? a. CH3 CH2 OH (ethanol) and CH3 CH2

step 1 So again, to determine whether or not they're missable, they need to share common polarities. Th

Which of these pairs of substances is likely to be miscible?...

Which of these pairs of substances is likely to be miscible? a. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$ (ethanol) and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OCH}_{2} \mathrm{CH}_{3}$ (diethyl ether) b. $\mathrm{CH}_{3} \mathrm{OH}$ (methanol) and methyl amine $\left(\mathrm{CH}_{3} \mathrm{NH}_{2}\right)$ c. CH $_{3} \mathrm{CN}$ (acetonitrile) and acetone (CH $_{3} \mathrm{COCH}_{3}$ ) d. $\mathrm{CF}_{3} \mathrm{CHF}_{2}$ (a Freon replacement) and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$ (pentane)

Which of these pairs of substances is likely to be miscible?
a. $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}$ (ethanol) and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OCH}_{2} \mathrm{CH}_{3}$ (diethyl ether)
b. $\mathrm{CH}_{3} \mathrm{OH}$ (methanol) and methyl amine $\left(\mathrm{CH}_{3} \mathrm{NH}_{2}\right)$
c. CH $_{3} \mathrm{CN}$ (acetonitrile) and acetone (CH $_{3} \mathrm{COCH}_{3}$ )
d. $\mathrm{CF}_{3} \mathrm{CHF}_{2}$ (a Freon replacement) and $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$ (pentane)

Key Concepts

Miscibility

Miscibility refers to the ability of two substances to mix completely in any proportion without separating into two phases. In liquid solutions, this property is largely determined by the types and strengths of intermolecular interactions between molecules, and similar types of interactions generally favor miscibility.

Intermolecular Forces

Intermolecular forces are the attractive forces between molecules, including hydrogen bonding, dipole-dipole interactions, and dispersion (van der Waals) forces. The relative strengths and types of these interactions can greatly influence the behavior of substances in mixtures, particularly with respect to solubility and miscibility.

Polarity

Polarity describes the distribution of electrical charge over the atoms in a molecule and is directly related to the molecule’s dipole moment. Polar molecules tend to interact well with other polar substances, while nonpolar molecules tend to mix best with other nonpolar substances, which is a key aspect of the 'like dissolves like' principle.

Hydrogen Bonding

Hydrogen bonding is a specific, strong type of dipole-dipole interaction that occurs when hydrogen is covalently bonded to highly electronegative atoms such as oxygen, nitrogen, or fluorine. This interaction is crucial in determining the solubility and miscibility of substances that can form hydrogen bonds, as it can lead to the formation of a strong cohesive solvent network.

Transcript

Please give Ace some feedback