Question

Reaction A Reaction B Energy (kJ/mol) HHHHH Energy (kJ/mol) Reaction progress- Reaction progress → What is the heat of reaction for Reaction A? What is the heat of reaction for Reaction B? Number Number AH ,,n= la kJ/mol AH = kJ/mol What is the activation energy for Reaction A? What is the activation energy for Reaction B? Number Number E = 0 kJ/mol E = 0 kJ/mol

Answer 1

1) Reaction A

a)

ΔH rxn = energy of product - energy of reactant

= 25 KJ/mol - 125 KJ/mol

= -100 KJ/mol

Answer: -100 KJ/mol

b)

Ea = energy of activated complex - energy of reactant

= 150 KJ/mol - 125 KJ/mol

= 25 KJ/mol

Answer: 25 KJ/mol

2) Reaction B

a)

ΔH rxn = energy of product - energy of reactant

= 50 KJ/mol - 25 KJ/mol

= 25 KJ/mol

Answer: 25 KJ/mol

b)

Ea = energy of activated complex - energy of reactant

= 100 KJ/mol - 25 KJ/mol

= 75 KJ/mol

Answer: 75 KJ/mol