Chemistry - Ideal Gas Question with Solution | TestHub
Match each change in Column I with its results in Column II (a Column I entry may match more than one Column II entry):
Column I (Change) | Column II (Result) |
|---|---|
() temperature of a fixed amount of gas becomes 4 times at constant pressure | (1) volume becomes 4 times |
(Q) pressure of a fixed amount of gas becomes 4 times at constant temperature | (2) density becomes one-fourth |
() 1 mol of gas is replaced by 1 mol of a gas of 4 times the molar mass (same and ) | (3) rate of effusion halves |
(S) and of a fixed amount of gas both become 4 times | (4) density becomes 4 times |
| (5) volume unchanged |
Choose the option with the correct matching:
Options:
Answer:
Solution:
() is proportional to at fixed : volume becomes 4 times (1). Same mass in 4 times the volume: density becomes one-fourth (2).
(Q) = constant: becomes one-fourth, so density becomes 4 times (4).
() 1 mol occupies the same volume at the same and (5). Mass is 4 times, so density is 4 times (4). Rate of effusion is proportional to 1/, so it halves (3).
(S) is proportional to /, which is unchanged: volume unchanged (5). Density = / is also unchanged, so (4) is false.
Correct matching: to 1,2; Q to 4; to 3,4,5; S to 5. Answer: (D).
