Consider separate 1.0 L samples of the following gases at STP: Cl 2 , C 2 H 6 ,

Question

Consider separate 1.0 L samples of the following gases at STP: Cl2, C2H6, and Xe.
Which of the following statements are true regarding these gas samples?


TrueFalse The C2H6 gas sample has the most molecules of gas present.

TrueFalse The C2H6 gas sample has the smallest average kinetic energy.

TrueFalse The mass of the gas in each container is different.

TrueFalse The C2H6 gas sample has the lowest density.

TrueFalse Each Xe gas particle collision with the container wall is more forceful as compared to each C2H6 and Cl2 collision.

TrueFalse The C2H6 gas molecules collide with the container walls most frequently.
i put false, false, true, true, false, false but its wrong

Explanation / Answer

False : The C2H6 gas sample has the most molecules of gas present.
according to avagadro's law equal number of moles of a gas occupies eqaual volumes.

False : The C2H6 gas sample has the smallest average kinetic energy.

Because average kinetic energy depends upon absolute temperature but not nature of sample

True : The mass of the gas in each container is different.

Eventhough number of moles are same but molar mass is different so mass of each component different.

True : The C2H6 gas sample has the lowest density.

number of moles of a gas n = 1 * 1 / (0.0821*273) = 0.0446

mass of Cl2 = 0.0446 * 71 = 3.1678

mass of Xe = 0.0446 * 131.29 = 5.8555

mass of C2H6 = 0.0446 * 30 = 1.338

density is directly proportional to mass of substance.

False: Each Xe gas particle collision with the container wall is more forceful as compared to each C2H6 and Cl2 collision.

Because molar mass high means its velocity less accrding to root mean velocity definition.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

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