5: Reaction Diagrams

Question 1

Define the activated complex

Answer 1

Unstable cluster of colliding reactant atoms formed during partial conversion of reactants into products

Question 2

Define activation energy

Answer 2

Minimum amt of energy required to start a chemical reaction, usually in the form of heat or thermal energy

Question 3

Define a spontaneous reaction

Answer 3

When reactant molecules have enough energy to start a chemical reaction without needing activation energy (additional energy)

Question 4

How does activation energy between exo and endo reactions differ

Answer 4

Endo AE much higher than exo

Question 5

How does enthalpy change determine if a reaction is reversible or irreversible

Answer 5

Reversible rx have small enthalpy changes, making it easier for the reaction to occur and therefore reverse because they have similar AE

Question 6

What are the symbols for rev/irrev reaction equations

Answer 6

Rev: <->
Irrev: ->