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gen chem > chapter 5/6 > Flashcards

chapter 5/6 Flashcards

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1
Q

Boyles law

A

P1V1=P2V2

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2
Q

Charles’ Law

A

(V1/T1)=(V2/T2)

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3
Q

Gays Law

A

(P1/T1)=(P2/T2)

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4
Q

Avagodros Law

A

(V1/n1)=(V2/n2)

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5
Q

Combined Gas Law

A

(P1V1/T1)=(P2V2/T2)

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6
Q

Ideal Gas Law

A

PV=nRT

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7
Q

Daltons Law of Partial Pressures

A

Pt=Pa+Pb+Pc… ; Pi=XiPt

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8
Q

Root Mean Square

A

Urms=√ (3RT/M)

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9
Q

in root mean square, what are the units of M and R

A

M= kg/mol
R= 8.315 J/(mol*K)

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10
Q

Graham’s Law of Diffusion/ Effusion

A

r1/r2 (rate) =t2/t1 (time) =√ (M2/M1)

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11
Q

Ideal Gas Constant

A
  1. 0.08206 (Latm/molK)
  2. 8.314 (J/mol*K)
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12
Q

atm -> mmHg

A

1atm = 760mmHg

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13
Q

mmHg -> torr

A

760mmHg = 760torr

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14
Q

torr -> Pa

A

760 torr -> 1.013*10^5 Pa

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15
Q

STP

A

1atm, 273.15K, 1mol=22.4L

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16
Q

initial energy equation

A

ΔU=q(heat)+w(work)

17
Q

what does it mean when q (heat) is negative

A

the heat is moving out/ work is being done by the system

18
Q

what does it mean when q (heat) is positive

A

heat is being added/ work is being on done on the system

19
Q

specific heat equation

A

q=msΔT

20
Q

heat capacity equation

A

q=CΔT

21
Q

in the heat capacity equation what is C

A

C=ms ; C in J/degrees celc.

22
Q

Δ enthalpy, heat energy

A

ΔHrxn = (qrxn/ mol substance)

23
Q

what does it mean when enthalpy is +

A

endothermic reaction

24
Q

what does it mean when is -

A

exothermic reaction

25
Q

specific heat of liquid water

A

4.184 (J* degreed celc./g)

26
Q

standard enthalpy of reaction

A

ΔHrxn= sum of enthalpy of products - sum of enthalpy of reactants

27
Q

what is the enthalpy when an element is in its most stable state

A

0 KJ/mol

28
Q

when is a diatomic element in its most stable state

A

when it is a gas

29
Q

when is a metal in its most stable state

A

when it is a solid

30
Q

when is mercury its its most stable state

A

when it is a liquid

gen chem (10 decks)

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