AP Chemistry 2.5 Structure and Arrangement of Atoms

AP Chemistry 2.5 Structure and Arrangement of Atoms. Under which of the following conditions would a real gas behave more like an ideal gas?

AP ChemistryChemical and Physical Properties from Structure and Arrangement
Structure and Arrangement of Atoms
LanguageEnglish Language

Transcript

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an ideal gas And here are potential answers All right

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Well if all our ideal circumstances came true we'd ride

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our unicorn to work as a professional nap taker and

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collect our six figure salary at the end of the

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day But the hard truth is ideal Circumstances are rarely

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reality It's true in our dreams of unicorn transportation and

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it's especially true in chemistry and ideal gas is one

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that behaves in a predictable mathematical fashion when the temperature

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pressure amount of gas or volume of gas changes following

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what is called the ideal gas law pressure times volume

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equals number of moles times a calculated gas constant our

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times the temperature So what makes the ideal gas law

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fail in reality forces of attraction between gas molecules When

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gas molecules are attracted to each other they spent too

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much time together and don't move around as much making

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their behaviour less ideal Forces of attraction between gas molecules

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are short range so the farther apart molecules are the

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less powerful these forces are And if gas molecules are

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moving around quickly they'll whiz by each other instead of

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spending time together in giving those forces of attraction timeto

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work in order for our molecules to be well behaved

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we want them to have fewer forces of attraction between

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them which means we want them to be far apart

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and moving fast This means that the question is actually

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asking us under which conditions will gas molecules be far

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apart and moving fast So what does that question mean

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by conditions Well all of the answers given pressure and

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atmospheres and a temperature And kelvin so we know our

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conditions will have something to do with those measurements More

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pressure means that the molecules will be forced closer together

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So we want a low pressure to keep them apart

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Temperature is the average kinetic energy of the gas molecules

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So ah hi Temperature means they have more energy and

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will be moving faster which is what we want Well

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answer D has the lowest pressure and the highest temperature

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Which means it's the answer We want yeah yes it's

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Not a terrible job to solve chemistry problems but well 00:02:14.643 --> [endTime] we'll take that professional knocker position any day