Question

QUESTION 15 Which statement A-D about the first law of thermodynamics (AEsystem-q+w) is not correct? O q is the energy added to or removed from the system by a temperature difference. O w is the energy added to or removed from the system by a deformation: that is, a force moves something. AEo stem is the change in the Gibbs free energy of the system. O If the only work that is done is P-V work, then q -the change in enthalpy The statements A-D are all correct. QUESTION 16 How mach work does a gas de when it expands against a constant pressure of 0 S 0 atm from a volume of 50.00 mL to a volume of 350.00 mL? 1 L atm) 101.3 J 1521 0.150J 0 -15 2 00 152 Save and Subrmit to save and submit. Click Save All Answers to save all answers Save A

Answer 1

15) option a is incorrect because q is the energy added or removed from the system is related to heat. Heat can be removed or added at the same temperature. At 100 degree Celsius water changes it's state and temperature remains constant. 16) w p*deltaV W 0.5* 0.3 0.15 atm-L 1 atm L 101.3 J 0.15 atm-L 15.195 J W 15.2 J (work done by gas, hence it is negative)