when you squeeze an air-filled balloon on all sides what happens inside? Chemistry homework

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the temperature inside the balloon decreases

there is no change in the number of collisions of air molecules against the wall of the balloon

there are more collisions of air molecules against the wall of the balloon

there are fewer collisions of air molecules against the wall of the balloon

Jan 15th, 2016

Thank you for the opportunity to help you with your question!

So imagine that you are squeezing a balloon.  This action will cause the volume of the balloon to decrease.

The question is what other characteristic will change when the volume is decreased.

The other characteristics in the ideal gas law are pressure, temperature and the number of moles.

Since the balloon is sealed, the number of moles will not change and you have not moved the balloon someplace to decrease the temperature.  To decrease the temperature you would have to decrease the surrounding temperature in some way.

So that means that the pressure must change.

Remember that PV = nRT, so P1V1 = P2V2.

That means as volume decreases pressure must increase.

Increased pressure means an increase in wall collisions.

The answer will be the third choice.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jan 15th, 2016

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