BET isotherm

[VilJ]

Hello guys,

My surfaces professor likes to put BET problems into his exams. Me and my classmates seem to have a problem with one of the exercises. So the question is pretty much the same in both exercises in this post, calculate the constant C, monolayer, and then find the specific area. So in the second problem (last two photos), finding these values and calculating the specific area has been quite easy, but now when trying to form the plot ourselves there seems to be a problem. We get too low values with this given data and the formula for Y-values. Even in the other exercise with the premade plot, the data doesn't give the same curve if we try to do it by hand. Is there something we are missing here?

Edited November 26, 2023 by VilJ

[VilJ]

1 hour ago, VilJ said:

Hello guys,

My surfaces professor likes to put BET problems into his exams. Me and my classmates seem to have a problem with one of the exercises. So the question is pretty much the same in both exercises in this post, calculate the constant C, monolayer, and then find the specific area. So in the second problem (last two photos), finding these values and calculating the specific area has been quite easy, but now when trying to form the plot ourselves there seems to be a problem. We get too low values with this given data and the formula for Y-values. Even in the other exercise with the premade plot, the data doesn't give the same curve if we try to do it by hand. Is there something we are missing here?

n_mono* not V_ads