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What is meant by a stress on a reaction at equilibrium?
A stress on a reaction at equilibrium refers to any change that disturbs the balance between reactants and products. This can include changes in temperature, pressure, or concentration. When a stress is applied, the reaction will shift in a direction that helps to relieve the stress and re-establish equilibrium.
How would the yield of ethanol at equilibrium change if the temperature was increased?
If you raise the temperature, the endothermic reaction will increase to use up the extra heat, therefore producing less percentage yield of ethanol and more of ethene and steam.
What correctly describes any chemical reaction that has reached equilibrium?
At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction. The concentrations of reactants and products remain constant, although they are still reacting. The equilibrium position can be affected by changes in temperature, pressure, or concentration.
How does increasing temperature effect endothermic reaction?
You can use LeChatelier's Principle to solve this problem. For an endothermic reaction A+heat<-->B Thus, by increasing the heat, you are shifting the equilibrium towards the reactants. The reaction will adjust itself by shifting the equilibrium to the right (producing more of the product).
Why did the reaction not proceed at all at 100 degree celsium?
The reaction may not have proceeded at 100 degrees Celsius because the temperature was too high, causing the reactants to decompose or the reaction to reach an equilibrium where the rate of the forward reaction is equal to the rate of the reverse reaction, resulting in no net change in the concentrations of the reactants and products. It's also possible that the reaction requires a lower temperature for activation energy to be met.
If the temperature of a reaction increases what happens to the value of the equilibruim constant?
Equilibrium constant changes when temperature changes. For an endothermic reaction, the equilibrium constant increases with temperature while for an exothermic reaction equilibrium constant decreases with increase in temperature. Equilibrium constants are only affected by change in temperature.
What piece of information will tell you which way the equilibrium of a reaction will shift due to a change in temperature?
The sign of the enthalpy change (∆H) of the reaction will indicate the direction in which the equilibrium will shift with a change in temperature. If ∆H is negative (exothermic reaction), an increase in temperature will shift the equilibrium towards the reactants; if ∆H is positive (endothermic reaction), an increase in temperature will shift the equilibrium towards the products.
At what temperature is the reaction at the equilibrium?
430 k
How does a change in temperature affect the equilibrium shift of a chemical reaction?
A change in temperature can affect the equilibrium shift of a chemical reaction by either favoring the forward reaction (endothermic) or the reverse reaction (exothermic). When the temperature increases, the equilibrium will shift towards the endothermic direction to absorb the excess heat. Conversely, when the temperature decreases, the equilibrium will shift towards the exothermic direction to release heat.
What is used to describe the conditions of a reaction to equilibrium?
An equilibrium constant
Which of the following factors does not affect thr equilibrium of a chemical reaction when it is changed?
The nature of the reactants and products does not affect the equilibrium of a chemical reaction when it is changed. The equilibrium constant is a characteristic of a particular reaction at a given temperature and does not depend on the identities of the substances involved.
When a reaction is at equilibrium increasing the temperature favors the reaction that releases energy as heat.?
This is False!!! According to LeChatlier's Principle, increasing the temperature is a strees on the equilibrium. To relieve that stress the reaction will shift producing more of the substances on the side of the reaction that absorbs heat energy.
Does taking water out of an equilibrium reaction change the equilibrium constant?
No, the equilibrium constant is independent of concentration as long as the ratio of products and reactants remains as is. It can be effected by anything that would influence the ratio of products and reactants, such as changes in temperature or the addition of a catalysis.
How does temperature affect the Keq of a reaction?
Changing the temperature will change Keq. (apex.)
What does equilibrium and equilibrium mixture mean?
A quantity that characterizes the position of equilibrium for a reversible reaction; its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.
What happens to the reaction 2NO2 N2O4 57.2 kJ when the temperature of the reaction is increased?
This is an endothermic equilibrium reaction Thus, increase temperature will push the reaction to the right. So more N2O4 is produced
What effect does the removal of heat have on the equilibrium position?
The temperature of a reaction will entirely change th equilibrium position for any given reaction. If I'm right, as you increase the temperature, the equilibrium shifts closer to the endothermic reaction as there is more heat to consume. It may also, of course, change other properties of the substances involved in the reaction, but that depends on the chemicals.
