Spontaneous Reaction Video Lessons

Concept

# 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?

###### 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.

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