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Why does yield of reaction decrease with increase in amount of catalyst?
Wiki User
∙ 11y ago
It doesn't. The whole point in a catalyst is that the only thing it does, is speeds up the reaction. It does not change or affect it in any other way.
However, factors which can change yield of reaction are temperature and pressure.
For example, take the manufacture of ammonia.
Pressure is measured in Atmospheres (atm)
Temperature is measured in degrees celcius (oC)
Companies that manufacture ammonia generally use 10 atms, and at least 450oC
Increasing the pressure above around 10 atms, reduces yield. Having temperature that high, also reduces yield, but as well as the catalyst, it increases the speed of the reaction.
Wiki User
∙ 11y ago
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Does the catalyst change the amount of energy released in the reaction?
no. the amount of catalyst does not influence the reaction; A catalyst simply provides an alternative route for the reaction with a lower activation energy.
What are the industrial applications of catalyst?
Decrease activation energy for a reaction by giving an alternate reaction mechanism. Therefore more of the substance will be able to be produced in a shorter amount of time.
What can reduce the amount of energy needed for a chemical reaction to take place?
adding a catalyst to the reaction
In a chemical reaction does the amount of matter increase or decrease?
Niether; matter cannot be created (increase in matter) nor destroyed (decrease in matter) following the Law of Conservation of Matter.
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
Does the catalyst change the amount of energy released in the reaction?
no. the amount of catalyst does not influence the reaction; A catalyst simply provides an alternative route for the reaction with a lower activation energy.
What are the industrial applications of catalyst?
Decrease activation energy for a reaction by giving an alternate reaction mechanism. Therefore more of the substance will be able to be produced in a shorter amount of time.
How do catalyst and inhibtors affect reaction rate?
A catalyst speeds up the reaction and lowers the amount of heat needed.
What can reduce the amount of energy needed for a chemical reaction to take place?
adding a catalyst to the reaction
In a chemical reaction does the amount of matter increase or decrease?
Niether; matter cannot be created (increase in matter) nor destroyed (decrease in matter) following the Law of Conservation of Matter.
What are the salient features of catalyst?
A catalyst alters (usually increases) the speed of a chemical reaction in which there is no net change in the amount of catalyst present after reaction is complete.
Do enzymes increase the activation energy of biochemical reactions?
Enzymes speed up a chemical reaction by lowering the energy required for a reaction to procede, the Activation Energy (Ea). The overall change in energy of the reaction is unchanged, so the net amount of energy released in a reaction is not increased.
How would a catalyst change the reaction energy diagram?
The overall enthalpy change in a common reaction would not change. Only the path to get there would change. A catalyst basically lessens the activation energy required to get the reaction to take place.
What term describes a substance rhat lowers the amount of energy needed to start a chemical reaction?
This substance is called a catalyst.
What are the features of catalyst?
A catalyst alters (usually increases) the speed of a chemical reaction in which there is no net change in the amount of catalyst present after reaction is complete.
How do catalyst affect a chemical reaction?
Adding a catalyst will make the reaction happen faster because the catalyst makes the Activation Energy (the energy required for the reaction to take place) to lower. Meaning more molecules can acquire this lower number of energy. A chemical reaction that involves a catalyst is a special type. A catalyst, in a given chemical reaction, is something that is both an input *and* an output of the reaction equation. What that means, practically, is that a small amount of catalyst is enough to process any amount of the other inputs. (More catalyst means that a given amount will be processed faster.)
Why does an enzyme function like a catalyst in a reaction?
It decreases the amount of energy needed for the reaction.
