3.2 Gas Laws Flashcards

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1
Q

Definition of Pressure

A

The normal force applied per unit area

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2
Q

Formula for Pressure

A

p = (F)/(A)

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3
Q

SI Unit of Pressure

A

Nm^-2 which is Pascal: Pa or can be Atm: 1.013 x10^5 Pa

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4
Q

Definition of Ideal Gas

A

Theoretical model of a gas that helps us to understand the behaviour of real, actual gases.

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5
Q

6 Traits of an Ideal Gas

A
  1. Molecules are point (perfect spheres) particles, each with negligible volume
  2. Molecules obey laws of mechanics
  3. There are no forces between the molecules except for when they collide
  4. Duration of collisions is negligible when regarding time between collisions
  5. 6.
  6. Cannot be liquefied or solidified
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6
Q

Gay Lussac’s Law (Pressure Law)

A

At constant volume, pressure is directly proportional to temperature

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7
Q

Gay Lussac’s Law Equation

A

(p1)/(T1) = (p2)/(T2) when volume is constant

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8
Q

Boyle’s Law

A

At constant temperature, pressure is inversely proportional to volume

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9
Q

Boyle’s Law Equation

A

(p1)(V1) = (p2)(V2) at constant pressure

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10
Q

Charles’s Law

A

At constant pressure, Volume and Temperature are directly proportional to each other

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11
Q

Charles’s Law Equation

A

(V1)/(T1) = (V2)/(T2)

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12
Q

Equation of State

A

(p1)(V1)/(T1) = (p2)(V2)/(T2)

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13
Q

The Mole (mol) (Avogardro’s Constant) (n)

A

(6.02)(10^23) mol-1

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14
Q

Calculating Mols

A

n = (N)/(NA) where N is number of molecules and NA is Avogardro’s constant

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15
Q

Atomic Mass Unit (1u)

A

1/12 mass of carbon 12 (Mass of carbon 12 is 12u)

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16
Q

Molar gas constant (R)

A

8.314 in J/molK

17
Q

Finding mol using molar mass (μ)

A

n = m/μ

18
Q

Ideal gas formula (using mol)

A

pV = nRT

19
Q

Boltzmann’s constant (kB)

A

kB = R/NA = (1.38 x 10^-23) in J/K

20
Q

Revised ideal gas formula (using kB)

A

pV = kBNT where N is number of molecules

21
Q

Ideal gas formula v3 (using KE)

A

EK = (3/2)(KB)(T) in J