Three statements are made below. Pick the correct answer. The molecular speed of
ID: 527638 • Letter: T
Question
Three statements are made below. Pick the correct answer. The molecular speed of N_2 gas is greater than SO_2 gas if both are at the same temperature. For an ideal gas we assume there are no attractive forces between molecules For gases and liquids, the molecules are in constant motion. only 1 is true l and 2 are true, 3 is false 2 and 3 are true, 1 is false 1 and 3 are true, 2 is false all three are true Given the three statements listed below, pick the correct answer. Effusion is the passage of a gas through a small hole into evacuated space The van der Waals equation corrects the ideal gas law by properly accounting for the attractive forces between molecules and the volume the molecules occupy. For a given gas, the ideal gas equation is most closely followed (is most correct) at high temperatures and high pressures. only 1 is true 1 and 3 are true, 2 is false all three are true 1 and 2 are true, 3 is false only b is trueExplanation / Answer
8. e
a)
According to Grahams Law, lighter gas has more molecular speed than heavier one at same temperature. SO2 Molecular mass is 64 while that of N2 is 14
Therefore N2 has greater molecular speed.
b)
It is assumed that ideal gas has no attractive or repulsive forces between molecules.
c)
It is true that molecules are in constant motion in gases and liquids.
All are true.
Option e is the answer.
9. a
Effusion is the passage of a gas through a small hole into evacuated space.
van der Waals introduced two constants in ideal gas equation, “a” corresponds for correction of intermolecular forces(which can be attraction or repulsion) and “b” for volume of one mole of atoms or molecules.
Gases deviate from ideal gases at low temperatures and high pressures.
Only first option about effusion is true.
Option a is the answer.
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