Reaction Pathways

Question 1

Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called?

Revolt · Accepted Answer

the activation energy

Question 2

Consider the reaction pathway graph below. Which inference is supported by evidence in the graph?

Revolt · Accepted Answer

This is an exothermic reaction where the total release of energy equals A + C.

Question 3

Consider the reaction pathway graph below.Which can be used to determine the H?

Revolt · Accepted Answer

E and D

Question 4

Consider the diagram below.What does D represent?

Revolt · Accepted Answer

energy of the products

Question 5

Consider the reaction pathway graph below.Which kind of reaction does this graph represent?

Revolt · Accepted Answer

exothermic because Hrxn = –167 kJ

Question 6

What happens if the amount of energy that is absorbed by the reactants is less than the activation energy?

Revolt · Accepted Answer

The reaction does not occur.

Question 7

Iron(II) chloride is formed from the reaction between iron and copper(II) chloride.Fe + CuCl2 FeCl2 + CuIf the reactants have Hf = –256 kJ mol–1 and the products have Hf = –321 kJ mol–1, which reaction pathway graph would have a similar shape to this reaction?

Revolt · Accepted Answer

mc013-4.jpg

Question 8

Consider the reaction pathway graph below.Which inference is supported by evidence in the graph?

Revolt · Accepted Answer

E and D show that the energy of the products is less than that of the reactants.

Question 9

Which description explains the role of activation energy in a chemical reaction?

Revolt · Accepted Answer

It provides reactants with sufficient energy for bonds to break and reform.

Reaction Pathways Answers

More from this Course

TRY EDGENUITY HACKS