Answer to Question #65760 in Physical Chemistry for muhd

Question

Question 6 : Which of the followings is not a type of system?
Open
Closed
Intensive
Isolated
Question 7 : One mole of an ideal gas is heated at a constant pressure of 101300 N
m
2
m2, from 273.2 K to 373 K. Calculate the work involved R = 8.314 J/mol/K).
8.314 J/mol
831.4 J/mol
83.14 J/mol
8314 J/mol
Question 8 : Which of the following expressions is associated with the law of conservation of energy?
dE = q + w
q = mCdT
dG = dH – TdS
H = E + PV
Question 9 : Which of the following statements is correct?
Temperature is an extensive property while heat is an intensive property
temperature is an intensive property while heat is an extensive property
both temperature and heat are extensive properties.
both temperature and heat are intensive properties

Answer 1

Question 6: Systems are open, closed and isolated. So the correct answer: intensive.
Question 7: When isobaric process work is:
A=p∙〖(V〗_2-V_1)=n∙R∙〖(T〗_2-T_1)
A=1∙8.314∙(373-273.2)=831.4 J
So the correct answer: 831.4 J/mol.
Question 8: Law of conservation of energy: the amount of heat received by the system goes to change its internal energy and a work against external forces. So the correct answer: dE = q + w.
Question 9: The correct answer: temperature is an intensive property while heat is an extensive property.
Answer: Question 6: intensive;
Question 7: 831.4 J/mol;
Question 8: dE = q + w;
Question 9: temperature is an intensive property while heat is an extensive property.