Question
Question: What will be the change in internal energy when 12 kJ of work is done on the system and 2 kJ of heat...
What will be the change in internal energy when 12 kJ of work is done on the system and 2 kJ of heat is given by the system?
A
+10 KJ
B
– 10 KJ
C
- 5 KJ
D
– 5 KJ
Answer
+10 KJ
Explanation
Solution
: Heat evolved, = - 2 kJ
Work done on the system, = + 12 kJ
ΔU=q+W=−2+12=+10kJ