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Chemistry > Chapter 5 Gases > Flashcards

Chapter 5 Gases Flashcards

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0
Q

V/T=V/T

A

Charles’s Law

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1
Q

PV=PV

A

Boyle’s Law

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2
Q

V/n=V/n

A

AVagadro’s Law

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3
Q

P/T=P/T

A

Gay-Lussac’s Law

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4
Q

Ideal Gas Law

A

PV=nRT
mRT=MVP
DRT=MP

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5
Q

Value of R

A

.08206 atm

8.314 kPa

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6
Q

Dalton’s Law of Partial Pressures

A

Ptotal=Pa+Pb+Pc=xaPa+xbPb+xcPc

More useful: xa=na/ntotal=Pa/Ptotal

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7
Q

Collecting Gas over Water

A

Patm=Pgas+Pwv

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8
Q

Hydrostatic Pressure

A

Pressure due to water

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9
Q

Diffusion

A

Random mixing of gases

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10
Q

Effusion

A

Gas particles leave a small hole in container

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11
Q

Kinetic Energy Formula

A

KE=1/2mv^2

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12
Q

Same gas, different T

A

T1/KE1=T2/KE2
T1/v1^2=T2/v2^2
T1/(rate1)^2=T2/(rate2)^2

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13
Q

Different gas, same T==> Graham’s law of effusion

A

Ta=Tb
KEa=KEb
Ma(ratea)^2=Mb(rateb)^2
Ma(va)^2=Mb(vb)^2

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14
Q

Real Gas ==> Correct V & P

Compare real volume to ideal, and real pressure to ideal

A

Real V > Ideal V
Real P < Ideal P

— This is due to the fact that in ideal gasses it is assumed that the particles have no volume (V) and that they have no intermolecular attraction (P)

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15
Q

When do real gases get closer to being ideal?

A

High T
Low P
Small Particles
Nonpolar - less IM attraction

16
Q

Pressure formula

A

P=F/A
Pressure=Force/Area

To increase pressure: More force, less SA

17
Q

Temperature is also called…

A

Average Kinetic Energy

18
Q

Dalton’s Law of Partial Pressures

A

Ptotal=P1+P2+P3…

Pressure ratio = mole ratio

19
Q

Mole Fraction is equal to…

A

Pressure Fraction

X1=n1/ntotal=P1/Ptotal

20
Q

Kinetic Molecular Theory

A

Gases are made up of widely separates, infinitely small particles

Movements of gas particles are:

1) Very Fast
2) Random
3) In generally straight lines
4) Involved in many, elastic collisions
5) Not affected by IM attraction
6) Particles have no volume

21
Q

Graham’s Law of Effusion (with t)

A

tA/tB=-/(MA/MB)

22
Q

Combined Gas Law

A

PV/nT=PV/nT

Chemistry (3 decks)

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