Destroyer Ochem #9

[whawha]

Advertisement - Members don't see this ad

The solution doesn't seem to explain why D is answer.... the choice (D) is dealing with the kinetic energy, which I think is constant for all ideal gas molecules at constant temperature. So, isn't D correct?

Solution is talking about the speed instead... Can someone help?

 

[BiomajorPreDent]

Can you post the question and choices?

From my edition of destroyer (09) I dont know what Q you are talking about, I even looked in the GenChem section too...

 

[whawha]

Can you post the question and choices?

From my edition of destroyer (09) I dont know what Q you are talking about, I even looked in the GenChem section too...

Ah Whoops, it was Gchem #8.... I think I was out of mind or something... Please help!!

 

[luckypenny]

For gas molecules, they have the same average kinetic energy which is given by KE = 1/2 mv^2, however when you set the KE of each gas equal to each other, we find the (average--- boltzman distribution) velocity of each gas is inversely proportional to the root of its molecular weight.

---so recap, same average kinetic energy, differnet (averaged) velocities

let me know if that helps. . .

 

[whawha]

For gas molecules, they have the same average kinetic energy which is given by KE = 1/2 mv^2, however when you set the KE of each gas equal to each other, we find the (average--- boltzman distribution) velocity of each gas is inversely proportional to the root of its molecular weight.

---so recap, same average kinetic energy, differnet (averaged) velocities

let me know if that helps. . .

Yes! So, the choice (D) should be reworded to "All molecules of an ideal gas have the same velocity at constant temperature" to be the answer, correct? (This problem is to find the false statement)