Answer to Question #65761 in Physical Chemistry for muhd

Question

Question 10 : Which of the following statements describes an isolated system?
No exchange of matter and energy with the surrounding is possible
exchange of both matter and energy with the surrounding is possible
only exchange of matter with the surrounding is possible
only exchange of energy with the surrounding is possible
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