Temperature
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Temperature
Does the temperature given in a problem play a factor in finding the equilibrium constant? If so, how do we use the temperature to find K?
Re: Temperature
I believe temperature affects the constant. For example if you increase the temperature, K increases, causing the reaction to shift right. however I believe that you will not be given a change in temperature and asked to find the constant (at least not as of now in class).
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Re: Temperature
Do you think we'll be asked something this conceptual on the midterm? Or would we just have to show our understanding by solving problems? I feel like it would be the latter, but I just wanna cover all my bases just in case.
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Re: Temperature
Hi, I think that the equilibrium constant can be affected by the temperature of a system. However, I'm not sure what the exact relationship is if someone else knows?
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Re: Temperature
Hi! Changing the temperature does affect the equilibrium constant because heat is considered a product or reactant in the equation. This, by increasing the temperature (adding “heat”) it changes the equilibrium based on whether the reaction requires or releases heat.
Re: Temperature
Yes, temperature does play a factor in finding the equilibrium constant. For example, if the temperature changes (e.g. increases), the value of the equilibrium constant will also change, depending on what happens with the temperature. For that reason, K is found depending on the temperature, and helps determine whether the reaction will shift right or left. Hope that helps!
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Re: Temperature
Hey! I read that an increase in temperature causes a decreasing in the equilibrium constant because the equilibrium "moves" to decrease the temperature. The reaction will favor whichever side absorbs heat to decrease the temperature.
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Re: Temperature
Yes. Temperature is the only factor affecting Kc, and you should look at it with thermodynamics.
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Re: Temperature
The temperature changes the value of K, but whether the reaction is endothermic or exothermic is what determines where the reaction will shift.
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Re: Temperature
Temperature does affect the K value. Adding heat to a reaction will cause a shift depending on whether it releases or absorbs heat in the process.
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Re: Temperature
Yes the temperature changes the actual value of K, but whether or not it is an exothermic or endothermic change will determine the shift in the reaction.
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Re: Temperature
Equilibrium constants are temperature dependent, meaning an equilibrium reaction will have different K values at different temperatures. When you're calculating the equilibrium constant, you only need the equilibrium concentrations at the given temperature, but you don't use the actual temperature value when finding K.
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Re: Temperature
By changing the temperature, the equilibrium constant is affected because heat would be part of the equation and increasing the temperature changes the equilibrium— the reaction resulting may require or need a release of heat.
Re: Temperature
yes if the temperature changes then the equilibrium constant is affected since heat is a product or reactant.
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Re: Temperature
Changing the temperature will change K, but which direction that it shifts depends on whether the reaction is exothermic or endothermic.
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Re: Temperature
Temperature does affect the value of Kp and Kc. For Kp if you change the pressure by decreasing the volume then depending what side of the equation has more moles of gas the reaction will shift. If there is more moles of gas on the right, then the reaction will shift to the left and vice versa.
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Re: Temperature
Temperature affects both Kc and kp values. Kc is affected only by temperature making it important.
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Re: Temperature
Yes, changing temperature affects the equilibrium constant since heat may be a product in an endothermic reaction or a reactant if it is an exothermic reaction.
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Re: Temperature
Yes temperature is incredibly important in these scenarios. If temperature changes, I'm pretty sure the constant also changes.
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Re: Temperature
Temperature increases and decreases affect the equilibrium constant directly proportionally. However, I believe we won't need to use temperature itself as a variable to find an equilibrium constant.
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Re: Temperature
Hello,
Yes temperature can have an affect on K but only if it changes. When it just mentions the temperature this is to clarify the reaction and all its products and reactants are at that temperature. This way you won't have to worry about temperature having an effect on K.
Hope this helps
Yes temperature can have an affect on K but only if it changes. When it just mentions the temperature this is to clarify the reaction and all its products and reactants are at that temperature. This way you won't have to worry about temperature having an effect on K.
Hope this helps
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Re: Temperature
The value of the equilibrium constant drops as the temperature rises. If you raise the temperature, the point of equilibrium will shift in such a way that the temperature is reduced once more. It will do this by promoting the heat-absorbing process.
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Re: Temperature
Yes, the temperature does play a role in changing K. The impact on the K value depends on if the reaction is endothermic or exothermic. Exothermic reactions have a lower K, and endothermic reactions have a higher K.
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Re: Temperature
Temperature is the only thing that affects the value of K. The change in K is determined by knowing whether the reaction is endo or exothermic. Exothermic reactions will have a lower K value than endothermic reactions.
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Re: Temperature
Temperature is the only state variable that can affect the K value of a reaction, so it plays a pretty important role!
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Re: Temperature
The temperature affects K, but most likely all will be at 25 degrees C to keep consistency in calculations.
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Re: Temperature
Yes, temperature affects Kc and Kp values. The direction the reaction shifts is reliant on whether it is exothermic or endothermic.
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Re: Temperature
Temperature affects the equilibrium constant because there is a specific equilibrium constant for every temperature but the actual temperature is not part of the equilibrium constant equation.
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Re: Temperature
Changes in temperature will affect the equilibrium reaction but we need to know if the reaction is exothermic or endothermic to find out where the reaction will shift.
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Re: Temperature
Changes in temperature will affect the equilibrium reaction but we need to know if the reaction is exothermic or endothermic to find out where the reaction will shift.
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Re: Temperature
Temperature isn't taken into account in calculations, but there is a specific equilibrium constant at each temperature. If the temperature changes, so does K.
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Re: Temperature
Yes, in fact, the equilibrium constant is only changed by a change in temperature, nothing else. Depending on if the reaction is exothermic or endothermic, the constant will increase or decrease. If the reaction is exothermic (heat on the products side), increasing the temperature would decrease the value of the equilibrium constant because the reaction will then favor the reactants side. If the reaction is endothermic (heat on the reactants side), increasing the temperature would increase the equilibrium constant, favoring the products.
If you're actually asking how to find the value of the equilibrium constant utilizing the temperature, I wouldn't worry about it, I don't think we've covered that yet.
If you're actually asking how to find the value of the equilibrium constant utilizing the temperature, I wouldn't worry about it, I don't think we've covered that yet.
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Re: Temperature
K will change if the temperature changes. How it changes is dependent on whether the reaction is endothermic or exothermic.
If the reaction is endothermic, then heat is required, so it will be like a reactant in the problem: Heat + R -> P
Increasing temperature in the above reaction will drive the forward reaction and make more products.
If the reaction is exothermic, then heat is released, so it will be like a product in the problem: R -> P + Heat
Increasing temperature in the above reaction will drive the reverse reaction and make more reactants.
If the reaction is endothermic, then heat is required, so it will be like a reactant in the problem: Heat + R -> P
Increasing temperature in the above reaction will drive the forward reaction and make more products.
If the reaction is exothermic, then heat is released, so it will be like a product in the problem: R -> P + Heat
Increasing temperature in the above reaction will drive the reverse reaction and make more reactants.
Re: Temperature
Out of all factors we discussed that could change (volume, pressure, moles, etc.), K is only affected by a change in temperature. Typically, at least for now, the temperature will be either 25C or 298K, and I believe we're only supposed to have a conceptual understanding that K will change as temperature changes.
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Re: Temperature
Temperature generally plays a role in the equilibrium constant as it can change how many moles there are on each side of the reaction.
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Re: Temperature
Temperature does play a factor in the constant equilibrium because as the temperature increases, K increases. Usually K is given to you at a specific temperature.
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Re: Temperature
changing the temperature change the value of the equilibrium constant based on whether the change in temperature favors the forward or reverse process.
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Re: Temperature
Yes, temperature does affect K. Increasing the temperature will favor the products if the reaction is endothermic, and will favor the reactants if the reaction is exothermic.
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Re: Temperature
Hi!,
I would say yes because the temperature affects K itself which in return alters the type of process (endothermic or exothermic)
I would say yes because the temperature affects K itself which in return alters the type of process (endothermic or exothermic)
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Re: Temperature
Yes, temperature change affects the equilibrium constant as either reactants or products will be more favored depending on the direction the temp changes.
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Re: Temperature
Yes it does affect the K. When the temperature changes, the K constant will either start to favor products for reactants depending on if it heated or cooled.
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Re: Temperature
Temperature does have an impact on K, the equilibrium constant. When you increase or decrease the temperature, K will change accordingly. Therefore, finding K is dependent on tempurature.
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Re: Temperature
You would first have to determine whether or not the reaction os exothermic or endothermic (releases or requires heat/energy). Based on this, increasing/decreasing temp would have opposite results. Increasing the temperature will favor the products if the reaction is endothermic, and will favor the reactants if the reaction is exothermic.
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Re: Temperature
in terms of the equilibrium constant, temperature will affect whether it increases/decreases depending on whether the reaction is endothermic (temp is considered a "reactant") or exothermic (temp is considered a "product)
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Re: Temperature
Temperature affect the K (in the sense that it will shift the reaction and change the K) but we will not need to know exact how it changes in that sense.
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Re: Temperature
The temperature plays an important factor in finding the equilibrium constant. Different temperatures result in different equilibrium constants which means different concentrations of products and reactants.
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Re: Temperature
Temperature affects the equilibrium constant depending on whether the reaction is exothermic or endothermic. Increasing the temperature of an exothermic reaction will shift the reaction to the left while an endothermic reaction will shift it to the right.
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Re: Temperature
Yes, depending on whether the reaction is endothermic or exothermic, changing the temperature directly impacts K. Since an exothermic reaction releases heat, increasing the temperature causes a shift to the left, decreasing K. On the other hand, endothermic reactions absorb heat, so increasing temperature shifts the equation to the right and causes K to increase. I don't think you'll be asked to solve for a change in K though; just comparing Q and K.
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Re: Temperature
An increase in temperature would effect Kc because a rise in temperature would shift the equilibrium towards the products, effecting the equilibrium.
Re: Temperature
I don't believe that we will ever directly use temperature to find K, but it is important to know that an increase in T will shift K to the right in exothermic reactions and an increase in T will shift K to the left in endothermic reactions.
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Re: Temperature
Temperature does affect the equilibrium constant depending on the reaction being endothermic and exothermic.
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Re: Temperature
Temperature changes K, however the direction in which the reaction shifts is dependent on whether the reaction is endothermic or exothermic.
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Re: Temperature
I’m unsure if we can use the temperature to actually calculate the constant, however we can use it to see how it shifts the reaction and thus changes the concentrations of products/reactants, changing K.
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Re: Temperature
Yeah, it does change it but I don't think we need to be able to calculate it. I think qualitatively analyzing based on Le Chatelier's suffices.
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