Chemsitry: Equilibrium Quantities Flashcards

1
Q

How do we calculate concentration?

A

moles / volume (dm3)

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2
Q

How do we convert from cm3 to dm3?

A

/1000

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3
Q

How do we find equilibrium quantities?

A

calculate actual number of moles of each species present at equilibrium

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4
Q

What is needed to calculate equilibrium moles?

A

-equation with mole ratio -initial moles -change in moles

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5
Q

Using the example CH4 + H2O <—> CO + 3H2, how are equilibrium moles calculated if we know this information:
initial CH4: 1 H2O: 1 CO: 0 3H2: 0
equilibrium moles CO: 0.4

A

change in moles CH4: -0.4 H2O: -0.4 CO: +0.4 3H2: +1.2 (0.4x3)
equilibrium moles CH4: 0.6 (1-0.4) H2O: 0.6 (1-0.4) CO: 0.4 3H2: 1.2 (0+1.2)

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