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What factor will most likely lower the activation energy of a reaction?
Wiki User
∙ 8y ago
The presence of a catalyst will lower a reaction's activation energy.
Wiki User
∙ 8y ago
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How a catalyst increases the rate of a reaction?
There are two ways in which catalysts work. You already know that when two different molecules bump into each other, they might react to make new chemicals. We usually talk about "collisions" between molecules, it would be much simpler to say that the molecules bumped into each other. How fast a chemical reaction is depends upon how frequently the molecules collide. You have probably been told about the "kinetic theory" which is all about heat and how fast molecules move around. What catalysts are doing when they make a chemical reaction go faster is to increase the chance of molecules colliding. The first method is by "adsorption", the second method is by the formation of intermediate compounds.Adsorption This occurs when a molecule sticks onto the surface of a catalyst. Make sure that you spell this word correctly; it is not the same as absorption. Here is an example: it is possible to use Platinum as a catalyst to make sulphur Trioxide from Sulphur Dioxide and Oxygen. Sulphur Trioxide is very important because it is used to make Sulphuric acid which is needed for car batteries. The molecules of the two gases (Sulphur Dioxide and Oxygen) get adsorbed (stuck onto) the surface of a Platinum catalyst. Because the two molecules are held so close together, it is more likely that they will collide and therefore react with each other. The Sulphur Trioxide easily falls off the catalyst leaving space for more Sulphur Trioxide and Oxygen.Intermediate Compounds Many catalysts, including all enzymes" work by forming intermediate compounds. What happens is very simple: the chemicals involved in the reaction combine with the catalyst making an intermediate compound, but this new compound is very unstable. When the intermediate compound breaks down it releases the new compounds and the original catalyst.
A reaction is most likely to occur when reactant particles collide with?
with both proper energy and proper oreantation
If A chemical reaction occurs and the substances increase in temperature Does this break the law of conservation of energy?
no, the energy came from an external source most likely.
What would increase the concentration of reactants?
It means that there will be more particles of the reactants in the vessel, so they are more crowded and collisions of the right energy are more likely. or collisions of the right energy are more likely.
In a hydrogen Ion pump the energy is used to join small molecules together to make larger ones which factor most likely has greatest effect on the number of molecules mitochondria can produce?
the amount of energy the flowing H+ ions have
What Activation energy play in a chemical reaction?
Activation energy tells you how much energy chemical reaction needs to start. Example paper wont suddenly start burning, but you need first to put some energy in paper, before that reaction starts.
Enzymes tend to raise the activation energy?
Enzymes lower the amount of activation energy required. This makes the reaction more likely to occur and speeds it up as well.
What will most likely happened if an appropriate enzyme is added to a chemical reaction?
The enzyme will act as a catalyst, a compound that lowers that activation energy of the reaction, and therefore, increase the rate of the reaction.
The addition of a increases the rate of reaction by providing an alternative pathway with a lower activation energy?
A catalyst, like enzymes.A catalyst is a substance that lowers the activation energy for a reaction and allows the process to speed up. The catalyst does not react with the substance so that it is 'used up'; in other words, it's reusable and comes out of the reaction unchanged.
Differentiate a positive catalyst from a negative catalyst?
A positive catalyst is a catalyst which speeds up the rate of a chemical reaction by lowering its activation energy. A negative catalysts slows the rate of a chemical reaction or makes it less likely to occur.
What conditions would likely cause the activation energy to be high?
the temperature is hot
How enzyme catalyze chemical reaction?
Enzymes lower the activation energy of a reaction (that is, the amount of energy that is needed in order for the reaction to occur).Without an enzyme, a reaction may need so much energy that it is impossible to obtain in a normal biological timespan. With enzymes, reactions require much less energy, so that they can occur hundreds of times a second.Enzymes can achieve this catalysis in many ways - for instance, if a reaction involves two substances combining to form one, the enzyme can bind each substance in a specific site that forces them close together, making the reaction much more likely to occur and requiring much less energy for the substrates to locate and approach one another.
Why is an energy absorbing reaction or an energy releasing reaction more likely to be spontaneous?
To become spontanious,energy should be released.
How does an atom react at low temperatures?
Chemical reactions require what is known as an "activation energy" to get started; if the reaction is exothermic, it may produce enough energy that it becomes self-sustaining. At lower temperatures there is less energy available, and so atoms are less likely to engage in chemical reactions.
If the temperature of a chemical reaction is increased the reaction rate?
It depends if the reaction is endothermic (requires heat/energy) or is exothermic (requires no heat/energy and produces heat/energy). In general, most reactions are endothermic and require some amount of energy to 'go' and hence, an increase in temperature will increase the rate of reaction. However, in exothermic reactions, introducing heat can halt the reaction as well as reverse it, if said reaction is reversible.
What makes proteins the ideal of compounds to act as enzymes?
An energy-releasing reaction is more likely to start spontaneously. You have to have enough energy to overcome the activation energy barrier (that is to start breaking some bonds). - See more at: http://www.chacha.com/question/what-makes-proteins-the-ideal-types-of-compounds-to-act-as-enzymes#sthash.WWgf8a0I.dpuf
How do enzyme activators affect enzymes?
Enzymes speed up chemical reactions by lowering the activation energy. The activation energy is the amount of energy needed to start a reaction and if this is lowered the reaction can occur more rapidly.
