Catalyst Definition and 59 Threads

  1. F

    A catalyst changes the mechanism of a reaction

    I know that this one can't be a. or c. which is true but, i think its either b. or d., does a catalyst change the mechanism of a chemical reaction ? Which statement is not correct regarding the function of a catalyst? a. A catalyst lowers the activation energy. b. A catalyst changes...
  2. P

    What does a catalyst do in a chemical reaction?

    What does a catalyst in a chemical reaction? I read wikipedia and the information is not very detailed to satisfy me. It basically says:
  3. T

    Could I speed up the reaction of electrlysis by using a catalyst?

    Could I speed up the reaction of electrlysis by using a catalyst?
  4. Flyboy

    Rejuvenation catalyst for Petrobond (R)

    I was wondering if you guys could help me out here. I would like to know what the rejuvenation catalyst for Petrobond (R) foundry sand is, if there is one at all.:confused: If you guys could get me the answer before the end of the day, I would appreciate it. :wink:
  5. S

    Can We Create a Hydrolysis Catalyst for Water Separation?

    Shall it ever be possible (regarding chemistry rules) to make an alloy which acts like a catalyst in separation of hydrogen and oxygen in water (i.e. drasticaly reduces the amount of electricity needed to do hydrolysis)? (PS: imagine someone grabs a piece of such material with bare hands...)...
  6. I

    Current Data for the world records most (efficient) Catalyst reaction

    Does anybody have the current Data for the world records most (efficient) Catalyst reaction to date?
    • Intuitive
    • Thread
    • Catalyst Current Data Reaction
    • Replies: 1
    • Forum: Chemistry
  7. G

    Mn Catalyst for Asymmetric Epoxidation

    For lab we used an Mn Catalyst for epoxidation of trans-B-methyl styrene. One of the problems is that we have to figure out which enantiomer of the trans-B-methylstyrene epoxide is formed by looking at the H NMR. I have never looked at an NMR before to try to figure out which enantiomers were...
  8. S

    Ester formation & amount of acid catalyst needed

    Hi I've been reading a lot about esters and have the general idea but I am not sure about exact amounts of acid catalyst needed. say the following experiment was tro be carried out to form an ester R-C=O(O-R2) *X moles of R-C=O(OH) *10X moles of R2-C-OH *How much H2SO4 would be needed? i...
  9. D

    Which substance acted as a catalyst?

    1st:( I'm sorry its a bit long) 1.0g of Zn in reacted with 50 cm3 of 1.0 mole/dm3 of H2SO4 to check the effect of some chemicals or elements on the reaction. 4 exp. are carried out in each exp. the time to collect 50cm3 of hydrogen was recorded. 1st exp. was done with nothing added to reaction...
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