Answers: Exercise 3_6 Hess’s Law

D, A, A, A, B, B, A, D, C, A

11.
	-672 kJ mol-1

12.
	+206 kj mol-1


13.
	-2168 kj mol-1

14.
a)

b)
	Reagent A – H2 Reagent B – Cl2 Reagent C – HCl

15.
	molar ratio 1mole HCl reacts with 1 mole AgNO3 AgNO3: n= cv 0.5 x 0.02 = 0.01 moles. [0.01 moles AgNO3 can react with 0.01 moles HCl] HCl: n= cv 1 X 0.015 = 0.015 moles
	Conclusion: more moles HCl than AgNO3 so HCl is in excess.