Which of the following statements is false?

a)

a catalyst alters the mechanism of reaction.

b)

a catalyst increases the rate of the forward reaction, but does not alter the reverse rate.

c)

a catalyst alters the activation energy.

d)

a catalyst may be altered in the reaction, but is always regenerated.

e)

a catalyst increases the rate of reaction, but is not consumed.

B) A catalyst increases the rate of the forward reaction,but does not alter the reverse rate.

Explanation:

A catalyst is a substance that increases the rate of reaction by providing an alternate mechanism which has low activation energy.

Hence options A and C are correct.

A catalyst increases the rate of forward and backward reaction to the same extent so that the equilibrium conditions remains unchanged.

Hence option B is wrong.

It is obvious that catalysis increases the rate of reaction but is not consumed.

It may be altered in the reaction but is always regenerated at the end.

Hence options D and E are correct.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

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