Rates + Types Of Reactions

Question 1

Ethene is likely to react with what?

Answer 1

Electrophiles - as they are drawn to electrons and it has a double bond which is full of electrons

Question 2

How does a catalyst affect the Delta G of a reaction?

Answer 2

Doesn’t change it!

Question 3

A reaction has a Delta H of + 12.4 KJmol-1.

What type of reaction is it?

Answer 3

Endothermic (energy is absorbed)

Question 4

The same reaction has a delta H of + 12.4 BUT has a delta G of - 17.2

How can that be explained?

Answer 4

Entropy increases

Question 5

A reaction that has a delta H of + 12.4 BUT a delta G of - 17.2 can NOT be described as…

Answer 5

Endergonic

Question 6

Increasing temperature increases rate of reaction as…

Answer 6

Increasing temperature increase the number of molecules with sufficient KINETIC energy to meet the Activation Energy requirements of the system.

Question 7

In the pipetting and spectrophotometry practical you measured the absorbance of a substance at a particular wavelength. Name them.

Answer 7

Potassium Permanganate

450-600 nm