Question
Question: Match list I with list II and select the CORRECT answer: List–I (Process) List–II (Operating intera...
Match list I with list II and select the CORRECT answer:
List–I (Process) List–II (Operating interaction involved)
(P) Clathrate compound of Xe in ice (1) Ion - Dipole
(Q) Liquation of Xe gas (2) Dipole - Dipole
(R) Liquation of HCl gas (3) Dipole - Induced dipole
(S) Hydration of Na+
A
1 3 4 2
B
3 4 1 2
C
3 4 2 1
D
1 3 2 4
Answer
P-3, Q-4, R-2, S-1
Explanation
Solution
The question asks us to match processes in List-I with the dominant intermolecular interactions involved in List-II.
Let's analyze each process:
(P) Clathrate compound of Xe in ice:
- Xenon (Xe) is a noble gas, which is nonpolar.
- Ice (H₂O) is water in solid form, and water is a polar molecule with a permanent dipole moment.
- When a nonpolar molecule (Xe) interacts with a polar molecule (H₂O), the permanent dipole of water induces a temporary dipole in the nonpolar Xe atom. This interaction is called a Dipole - Induced dipole interaction.
- Therefore, (P) matches with (3).
(Q) Liquation of Xe gas:
- Liquation (or liquefaction) is the process of converting a gas into a liquid. This requires the gas molecules to come close enough to experience intermolecular forces.
- Xenon (Xe) is a nonpolar atom. The only intermolecular forces present between nonpolar atoms or molecules are London Dispersion Forces (also known as instantaneous dipole - induced dipole forces or van der Waals forces). These forces arise from temporary, fluctuating dipoles.
- Therefore, (Q) matches with (4).
(R) Liquation of HCl gas:
- Hydrogen chloride (HCl) is a polar molecule because of the significant electronegativity difference between hydrogen and chlorine, resulting in a permanent dipole moment.
- When HCl gas liquefies, HCl molecules interact with other HCl molecules. The primary intermolecular force between polar molecules is the Dipole - Dipole interaction.
- Therefore, (R) matches with (2).
(S) Hydration of Na+:
- Hydration refers to the process where water molecules surround and interact with an ion or molecule.
- Na+ is a positive ion.
- Water (H₂O) is a polar molecule with a negative end (oxygen) and positive ends (hydrogens).
- The interaction between an ion (Na+) and a polar molecule (H₂O) is an Ion - Dipole interaction. The positive Na+ ion is attracted to the negative (oxygen) end of the water dipole.
- Therefore, (S) matches with (1).
Combining the matches:
- (P) - (3)
- (Q) - (4)
- (R) - (2)
- (S) - (1)
Option (C) correctly matches our derived relationships.