Item24 10points ebookreferences item 24 effect of...

Item24 10points eBookReferences Item 24 Effect of temperature on diffusion When temperature increases, the random movement of molecules increases which subsequently increases diffusion rate. If you have the same concentration of each of the following substances and they all have the same molecular weight, predict which substance will have the greatest diffusion rate? Multiple Choice substance #5 in a gas at 78° F substance #2 in a liquid at a 32° F substance #4 in a gas at 32° F substance #3 in a liquid at 64° F

Transcript

00:01 Hello student here the question is given and the question is about the diffusion rate and these refusion rate are affected by temperature as well as the molecular weight so how they are going to affected by these two so if we talk about this diffusion we know the diffusion is the process moment of a molecule from high its higher concentration to the lower concentration and in this process if the temperature is increased then by the increasing of temperature the kinetic energy is increased and this kinetic energy is a molecules are going to move faster due to increase in the temperature because this increase in temperature is going to increase the speed of these molecule so ultimately increase the diffusion rate or rate of diffuser.

01:06 And similarly if we talk about this molecular weight of the dye or any substances, it is also affecting these diffusion rate because if this molecular weight is higher, then this heavier molecule not able to move faster.

01:26 So, heavier molecule not able to move faster.

01:38 So if the molecular weight is high, then the diffusion rate will be low.

01:44 So this is affected.

01:46 And if the temperature is also going to be affected.

01:49 So in this case, the different dye is given.

01:53 The first one is potassium dichromate, aniline blue, genus green.

01:56 So here the molecular weight is also written 294, 510.

02:00 And this is 738.

02:02 So this potassium dichromate has the lowest molecular weight so it can move faster as compared to all other two.

02:11 So this potassium dichromate is at the low temperature it is going to be moved fasted at the 9mm per hour.

02:23 So if there is in 1 hour it is going to move in the 9mm at the low temperature which is a 5 degrees centigrade.

02:32 So this is the rate of diffusion.