Question

Question 11 : Calculate the
Δ
H
ΔH
value of the reaction:
H
C
l
+
N
H
3
→
N
H
4
C
l
HCl+NH3→NH4Cl
Δ
H
o
ΔHo
values for HCl,
N
H
3
NH3
and
N
H
4
C
l
NH4Cl
are -92.30, -80.29 and -314.4 respectively
-486.99
252.88
141.8
-141.8

Question 12 : Which of these is true of an isochoric system?
Volume remains constant
Heat is allowed into the system but not allowed out of the system
Takes place at constant temperature
Pressure is not constant