Problem: As shown here, one type of computer keyboard cleaner contains liquefied 1,1-difluoroethane (C2H4F2), which is a gas at atmospheric pressure. When the nozzle is squeezed, the 1,1-difluoroethane vaporizes out of the nozzle at high pressure, blowing dust out of objects.Based on your experience, is the vaporization a spontaneous process at room temperature?

🤓 Based on our data, we think this question is relevant for Professor Kuntz's class at UNC.

FREE Expert Solution

We’re being asked to determine if the given process is spontaneous. 


The standard free energy change of a reaction (ΔG) is given by the following equation:



Recall that if:

• ΔG < 0 or ΔG = (–); the reaction is spontaneous

• ΔG = 0; the reaction is at equilibrium

• ΔG > 0 or ΔG = (+); the reaction is non-spontaneous


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Problem Details

As shown here, one type of computer keyboard cleaner contains liquefied 1,1-difluoroethane (C2H4F2), which is a gas at atmospheric pressure. When the nozzle is squeezed, the 1,1-difluoroethane vaporizes out of the nozzle at high pressure, blowing dust out of objects.
A canister contains liquefied C2H4F2, which leaves the spray nozzle as vaporized C2H4F2.

Based on your experience, is the vaporization a spontaneous process at room temperature?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Spontaneous Reaction concept. You can view video lessons to learn Spontaneous Reaction. Or if you need more Spontaneous Reaction practice, you can also practice Spontaneous Reaction practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Kuntz's class at UNC.