Osomosis/Ion Conc Question

[fhussain9]

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I got the answer right, but I thought there were equal amounts of 400 mmol on each side that's why there is not net movement. Can someone explain why my reasoning is wrong? Thanks

 

[theonlytycrane]

You're reasoning is right- that's why there's no net movement of water. They just also mention that the ions wouldn't be able to move across the membrane had there been a difference in solute concentration.

 

[aldol16]

I got the answer right, but I thought there were equal amounts of 400 mmol on each side that's why there is not net movement. Can someone explain why my reasoning is wrong? Thanks

Why do you believe your reasoning is wrong? I don't see anything in the explanation that would suggest your reasoning is wrong.

 

[fhussain9]

Why do you believe your reasoning is wrong? I don't see anything in the explanation that would suggest your reasoning is wrong.

It says that based on concentration differences of the salts water should move from right to left (given it didn't mimic a plasma membrane)

 

[aldol16]

It says that based on concentration differences of the salts water should move from right to left (given it didn't mimic a plasma membrane)

Oh, that part can't be right. There's no concentration different in electrolytes here. They seem to contradict themselves - your reasoning is right.

 

[fhussain9]

Oh, that part can't be right. There's no concentration different in electrolytes here. They seem to contradict themselves - your reasoning is right.

Thanks!