Flashcards
Equilibrium
Flashcards do conjunto (15)
- 1Dynamic equilibrium (3)Closed system
forward and backward reactions are occurring at equal rates
The concentrations of reactants and products stays constant - 2Effect of increasing Temperature on equilibriumIf temperature is increased the equilibrium will shift to oppose this
Moves in the endothermic direction to try and reduce the temperature by absorbing heat. - 3Effect of decreasing Temperature on equilibriumIf temperature is decreased the equilibrium
will shift to oppose this and move in the
exothermic direction to try and increase the temperature by giving out heat. - 4Increasing pressureequilibrium to shift towards the side with fewer moles of gas to oppose
the change and thereby reduce the pressure.
Leads to higher yield of smaller side - 5Why industrially high pressures aren't always cost effectivehigh electrical energy costs for pumping the gases to make a high
pressure
and the equipment to contain the high pressures is expensive - 6Effect of Concentration on equilibrium I2 + 2OH- --> I- + IO- + H2O (3)^[OH]- = eq. RHS shift to oppose this and remove OH- ions.
Higher yield of I- and IO-.
The colour would change from brown to colourless. - 7Effect of catalystno effect on the position of equilibrium, but it will speed up the rate at which the
equilibrium is achieved. - 8Why?It does not effect the position of equilibrium because it speeds up the rates of the forward and
backward reactions by the same amount. - 9Haber processN2 + 3H2 <-> 2NH3
T= 450c, P= 200 – 1000 atm, catalyst = Fe - 10Contact processStage 1 S (s) + O2(g) <-> SO2(g)
Stage 2 SO2 (g) + ½ O2 (g) <-> SO3 (g)
T= 450c, P= 1 to 2 atm, catalyst = V2O5 - 11Production of methanol from COCO (g) + 2H2(g) <-> CH3OH (g)
T= 400c, P= 50 atm, catalyst = Cr/Zn oxides - 12Hydration of ethene to produce ethanolCH2=CH2 (g) + H2O (g) <-> CH3CH2OH(l)
T= 300c, P= 70 atm, catalyst = conc. H3PO4 - 13Problems with high pressure in etheneHigh pressure also leads to unwanted polymerisation of
ethene to poly(ethene) - 14Conditions effecting KcKc only changes with temperature
- 15Magnitudes of Kc1=halfway
>1=equilibrium favours the product
<1=equilibrium favours the reactants
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- O usuário eliminou as informações de disciplina FlashCards sobre Equilibrium, criado por Usuário eliminado em 28-04-2018.
- Criado por
- Usuário eliminado · abr 2018
- Atualizado
- 28 abr 2018
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- Criado por I Shouldn't be awake · 28 abr 2018
- Copiado por I Shouldn't be awake · 28 abr 2018
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