Lecture 18- Equilibrium 1 Flashcards

1
Q

Completion reaction

A
  • Some reactions go to completion

- All of the reactants are used up, as they all turn into products

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2
Q

Dynamic equilibrium

A
  • Most reactions do not go to completion
  • All of the reactants do not get used up
  • The system reaches a dynamic state where reactants are continually turning into products, and products are continually turning back into reactants
  • 2 way arrow
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3
Q

Chemical equilibrium

A
  • Forward and reverse reactions continue to take place
  • The rate of the forward reaction equals the rate of the reverse reaction
  • Concentrations of all species remain constant, yet will rarely be equal to one another
  • Takes place in a closed system
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4
Q

Keq

A
  • Products/reactants
  • [In brackets]
  • coefficients are powers
  • include gases and aqueous
  • take out liquids and solids
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5
Q

Kp

A
  • Pressure constant
  • Products/reactants
  • (In parenthesis)
  • coefficients are powers
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6
Q

Partial pressure

A
  • The partial pressure of a gas in a system is the pressure exerted by that specific gas
  • The partial pressure of all the gases in the system sum up to the total pressure in that system
  • 1 mole of one type of gas will exert the same pressure as 1 mole of a different type of gas, under the same conditions of volume and temperature
  • 2 moles of gas will exert twice as much pressure
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7
Q

Conversions between Kc and Kp

A

Kp=Kc(RT)^n

  • R=0.0821 Latm/mol K
  • T= temperature in Kelvin
  • n= moles of products - moles or reactants
  • Given Kc asked to find Kp or vice versa
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8
Q

What Keq tells us

A
  • Keq > 10 = mostly products, equilibrium to the right

- Keq

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9
Q

ICE

A
  • Put in values

- Solve for x

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10
Q

c to k

A

+273

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11
Q

Writing Kc for pressure

A

don’t forget p

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