Q:An important property of the catalyst is that the reaction equilibrium is not changed while increasing the forward reaction rate and the reverse reaction rate. However, because the enzyme for the specificity of the substrate, is not almost every reaction by the enzyme are one way to do it.

Only answer lz, the last question and. The reason is that both the restriction endonuclease and the ligase are required for certain reaction conditions and the reaction substrate. And the reaction conditions are different, so that the final results are different, of course, the enzyme is relatively speaking is not so high, perhaps the destruction is always stronger than the building it. The ligase is the need for a specific substrate, three distilled water, temperature, time (long time do not forget the formula) to control, it may have a certain proportion of connection. So this is two questions.

Q:I know that a species that does not appear in the chemical equation may also affect the rate of a reaction - e.g. a catalyst. But does that mean the catalyst can be present in the rate equation, and if so are catalysts always present in the rate equation?

There are many reactions that would not happen to any extent without a catalyst, yet I have never seen a rate equation that included a catalyst. For example, the Haber reaction requires a catalyst, but the rate equation for it does not include a catalyst. If a reaction will work without a catalyst, you can find its rate under this condition. Then if you run the same reaction with a catalyst you will get a different rate of reaction but the catalyst concentration does not show up in the Rate law for that reaction.

Q:What happens to a catalyst after a chemical reaction?

Only a catalyst? Poor catalyst. Catalysts get very little respect. Folks assume that catalysts don' do anything, yet they magically speed up a reaction without taking part in the reaction. That just isn't the case. Most chemical reactions take place in multiple steps. A catalyst can be a reactant in one step and a product in s subsequent step, thereby giving the impression that it did not react. The catalyst speeds up a chemical reaction by providing an alternate reaction pathway which has a lower activation energy. The lower activation energy means that more molecules will have the energy required to react, and the rate will be greater. So the bottom line is that the catalyst will have appeared not to have reacted, and returns to its original state.

Q:Junior high school chemistry - chemical reaction before and after the quality and chemical properties of the material must be the catalyst?

It is not always possible that the equivalent reaction, i.e. one or more of the reactants, is the same as the relative atomic mass of one or more of the products and the coefficients in the chemical equation are the same

Q:Can chemical reaction limits be changed by catalyst or other methods?

No, the catalyst can only speed up the chemical reaction, but can not change the chemical limit.

Q:Just something I've always wondered about...

there are so much catalysts made up of transition metals. because one of the characteristics of transition metals is can be made to catalyst. one of the catalyst that is mostly used is iron fillings which is used as catalyst to make ammonia from nitrogen gas and hydrogen gas.

Q:What suitable catalysts can I use for the reaction between Hydrochloric acid and zinc metal?

Something that can cause a reaction, speed up or slow down a reaction, without changing itself.. structure yea..

Q:What is catalyst in Science?

A catalyst is a substance that increases the rate of a reaction by decreasing the activation energy (energy required to start the reaction). It does so by creating a new reaction mechanism (the way the reaction happens on a molecular level) that happens more easily and with less energy. For example, a catalyst could attract both reactants, thus bringing them directly together and facilitating the reaction.

Q:Can some chemical reactions have a variety of catalysts that are correct or wrong?

Very correct, many reactions can have a lot of catalyst. Such as hydrogen peroxide decomposition can be used manganese dioxide or fe destroy

Q:What are the catalysts that appear in the chemistry experiment?

Oxygen Oxygen Oxygen Oxygen also used when the catalyst is manganese dioxide MnO2