In each of the following, list all forces present. What is the strongest force t

Question

In each of the following, list all forces present. What is the strongest force that must be overcome in each case, in order for the given change to occur? Evaporation of CH_3OH Decomposition of H_2O_2 Melting of H_2NCONH_2 Boiling of hydrochloric acid Butanol (CH_3CH_2CH_2CH_2OH) and diethyl ether (CH_3CH_2OCH_2CH_3) both have the same general formula, C_4H_10O, but different structural arrangement of atoms. Which of these two molecule have the higher boiling point? Explain your answer. Arrange these compounds in order of increasing boiling points. Explain your reasoning. H_2O H_2Se H_2S H_2Te

Explanation / Answer

(7) (a) In CH3OH inter molecular hydrogen bonds should be broken.

(b) To decompose H2O2, covalent bonds between O and H and O and O should be broken.

(c) For melting of urea intermolecular hydrogen bonds should be broken

(d) To boil HCl , dipole - dipole interactions among HCl molecules should be broken.

(8) Though butanol and diethylether have same molecular formula, they have different molecular interactions and hence their boiling points are different.

In butanol, because of the presence of - OH group there exist inter molecular hydrogen bonding among its molecules and hence it requires higher temperature to breakdown these interactions, so it has high boiling point.

where as in diethyl ether, there exist only weak dipole - dipole interactions, which requires smaller temperatures to break down these interactions and hence it has lower boiling point then butanol.

(9)

H2S < H2Se < H2Te < H2O

Infact from top to bottom i.e O to Po in 16th group the boiling points of their hydrides should increase gradually, but due to the presence of intermolecular hyrogen bonds in H2O it has abnormally high boiling point.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

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