16) John is still thinking, and even better, because he is starting to cool off.

Question

16) John is still thinking, and even better, because he is starting to cool off. He is still contemplating the liquid and solid states in his glass. Why doesn't the water just fly out of his glass? a) (3 pts) He figured he was sweating so much that he was losing too much salt. So he dissolved some table salt, NaC in his drink. Describe the intermolecular forces that are occurring between the salt and the water molecules in his drink and explain why they occur b) (3 pts) Now that wasn't too tasty, so he found some ethanol and he added it to his drink. Ethanol has the structure below. Describe the intermolecular forces that are occurring between the ethanol and the water CH2 molecules and why are occur.

Explanation / Answer

(a)

When NaCl dissolved in water it undergoes dissociation as follows,

NaCl (aq.) -------------> Na+ (aq.) + Cl- (aq.)

So, there exists ion - dipole interactions between ions of NaCl and water molecules.

(b)

Since tere is a - OH bond in ethanol,

when ethanol is added to water there exists intermolecular hydrogen bonds between ethanol and water molecules.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.