Thermodynamics Properties And Process

Assuming each reaction is carried out in an open container,
Reaction that shows ΔH=ΔE is :

1. $H_2\left(g\right)+B{r}_2\left(g\right)\to 2HBr\left(g\right)$

2. $C\left(s\right)+2H_{2}O\left(g\right)\to 2H_2\left(g\right)+C{O}_2\left(g\right)$

3. $PC{l}_5\left(g\right)\to PC{l}_3\left(g\right)+C{l}_2\left(g\right)$

4. $2CO\left(g\right)+O_2\left(g\right)\to 2C{O}_2\left(g\right)$

Match List I with List II.

	List-I (Process)		List-II (Conditions)
A.	Isothermal process	I.	No heat exchange
B.	Isochoric process	II.	Carried out at constant temperature
C.	Isobaric process	III.	Carried out at constant volume
D.	Adiabatic process	IV.	Carried out at constant pressure

Choose the correct answer from the options given below:

1.		2.
3.		4.

Work done during reversible isothermal expansion of one mole of hydrogen gas at 25°C from a pressure of 20 atmospheres to a pressure of 10 atmospheres is:
(Given: R = 2.0 cal K^–1 mol^–1)

1.	–413.14 calories	2.	413.14 calories
3.	100 calories	4.	0 calorie