Q:What is the catalytic efficiency of ordinary chemical catalysts?

Different reactions, with the same catalyst, the catalytic efficiency is different. The same reaction, with different catalysts, the catalytic efficiency is also different

Q:What is positive and negative catalyst in chemistry?

Positive catalyst can speed up the reaction rate, negative catalyst can slow down the reaction rate

Q:Always speeds the reation ratedoes not affect the reation rateundergoes a chemical changedoes not become part of the chemical changealways slows the reation rate

Always speeds the reaction rate.

Q:What is the analytical principle of chemical adsorbents? How about the number of active catalyst centers tested?

What do you mean by the chemical adsorber? BET is the use of the surface of the uneven force field, but the inert gas at low temperature in the surface adsorption. TPD, TPR is the number of active centers that can be measured by the technique of desorption and reduction between specific gases and catalysts as the temperature increases. If the active site is a reduced position, H2-TPR can be used. If the active site is acidic, NH3-TPD can be used, but also the method of alkali titration.

Q:The catalyst can change the chemical reaction process, why is it wrong?

No, only for the length of time

Q:Manganese dioxide can be used as a catalyst for various chemical reactions

The reactor may be a reactant,

Q:What are the properties of the catalyst (eg, specificity)?

The definition of a chemical reaction in the chemical reaction can change the chemical reaction rate of other substances, and its quality and chemical properties before and after the reaction did not change the material called catalyst, also known as catalyst. Catalyst in the role of chemical reaction There is also a saying that the catalyst reacts first with one of the reactants and then the two products continue to undergo a new chemical reaction under the original conditions and the reaction conditions of the catalyst reaction are more reactive than the original reaction The reaction conditions of the catalyst have been changed by the reaction of the catalyst by the reaction of the catalyst, that is, the quality and chemical properties mentioned above did not change before and after the reaction.

Q:A substance involved in chemical reflection, but reflects the quality of the material before and after the change, you say it is a catalyst?

Is a catalyst. Principle and burning black copper wire and ethanol reaction to produce acetaldehyde the same

Q:In the chemical reaction, the rate of decomposition reaction is related to the quality of the catalyst?

There are relationships

Q:Explain how a catalyst may increase the rate of chemical reaction?

A catalyst speeds up the reaction by lowering the energy needed for a reaction to occur.