Fluorocarbons (compounds that contain both carbon
and fluorine) w...

Question

Fluorocarbons (compounds that contain both carbon
and fluorine) were, until recently, used as refrigerants.
The compounds listed in the following table are all gases
at 25 °C, and their solubilities in water at 25 °C and 1
atm fluorocarbon pressure are given as mass percentages.
(a) For each fluorocarbon, calculate the molality of a saturated solution. 
Fluorocarbon Solubility (mass %)
CF4 0.0015
CClF3 0.009
CCl2F2 0.028
CHClF2 0.30

Accepted Answer

Hey, everyone, we're asked between ultraviolet and microwave, which has the shorter wavelength and which has the lower energy to better answer this question. I'm going to go ahead and pull out our spectrum right here. First, let's go ahead and find our ultraviolet and our microwave. And we can see that it is in these regions starting off with our wavelength. We can see that our ultraviolet is at 10 to the negative 8 m, which is seen right here. Now, let's go ahead and look at our microwave, we can see that our microwave is at 10 to the negative 2 m. So comparing the two, this means our ultraviolet has the shorter wavelength. So it looks like C and D can't be our answer. Now, let's go ahead and look at our energies. So energy is proportional to our frequency. So we can simply look at our frequency starting with our ultraviolet, we can see that this is at 10 to the 16 Hertz. Now comparing this to our microwave, this can be seen at 10 to the 10 Hertz. So comparing the two, it looks like microwave has the lower energy. So it looks like our answer here is going to be a where we have our shorter wavelength as our ultraviolet and our lower energy as our microwave. Now, I hope that made sense and let us know if you have any questions.

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