Term
| Describe chemical equilibrium |
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Definition
| occurs whem two opposing rections in a reversable, closed chemical system are happening at exactly the same rate. . There is a balance existing at the reaction rate. |
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Term
| why is it called dynamic equilibrium? |
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Definition
| because despite no net absobablee chambe, reactions continue to occur at molecular level. |
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Term
| macroscopic properties must be... |
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Definition
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Term
| In an equilibrium, what does an increase of temperature do to the system? |
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Definition
| increasing temperature speeds up all chemical reactions HOWEVER it favors endothermic direction. |
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Term
| In an equilibriumm what does an decrease of temperature do to the system? |
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Definition
| it favors exo thermic reaction. |
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Term
| 4 absolute requirements for equilibrium |
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Definition
1. system must be closed
2.temperature is constant
3. opposing reactions occur at equal rates
4. can be reacted by starting from either reactant or product (REVEERSIBLE REACTION) |
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Term
| In a susterm of equilibrium, explain the rate of the forward reaction and revers reaction. |
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Definition
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Term
| Explain the appearance of equilibrium systems |
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Definition
| picroscopic processes continue in a balance which yields no macroscopic changes so nothing apperas to be happening. |
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Term
| if one mole of X and one mole of Y ar emixed in a 1.0 litre container, the rate of the forward reaction will initally be |
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Definition
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Term
| immediately aftermixing, the rate of the reverse reaction will be |
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Definition
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Term
| While the forward rate > the reverse rate, the [NO] and the [CO2] will be |
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Definition
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Term
| After the initial mixing, the rate of the forward reaction will be____ while the The rate of the reverse reaction will be ____- |
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Definition
| decreasing and increasing |
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Term
| Once equilibrium is established, what can be said about the rates of the forward and reverse reaction |
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Definition
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Term
| NO2 is a darker brown colour. All of the other gases are colourless. Describe what will happen to the colour of the gas mixture from when the NO2 and CO are mixed until equilibrium is established |
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Definition
| It is dark at first (high [NO2]). The colour will gradually get lighter until equilibrium is reached. Apter that, it will remain constant. (light brown) |
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Term
| one mole of NO and one mole of CO2 are mixed. If left lone at a constant temperature_____ will be established. Once this is reached, will the colour be different than the equilibrium in the previous card? |
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Definition
| equilibrium and no. it will end up as the same colour. (equilibrium can be approached from the leeft or from the right) |
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