Two solutions (the system),each with a volume of 25.0 mL at 25.0°C,are mixed in a beaker.A reaction occurs between them,and the temperature rises to 35.0°C.After the products have equilibrated with the surroundings,the temperature is again 25.0°C and the total volume is 50.0 mL.No gases are involved in the reaction.Which relationship concerning the change from initial to final states (both at 25.0°C)is correct?
A)ΔU = 0
B)ΔH = 0
C)ΔU 0
D)q = 0
E)W = 0

Question

Two solutions (the system),each with a volume of 25.0 mL at 25.0°C,are mixed in a beaker.A reaction occurs between them,and the temperature rises to 35.0°C.After the products have equilibrated with the surroundings,the temperature is again 25.0°C and the total volume is 50.0 mL.No gases are involved in the reaction.Which relationship concerning the change from initial to final states (both at 25.0°C)is correct?
A)ΔU = 0
B)ΔH = 0
C)ΔU > 0
D)q = 0
E)W = 0

Quizplus · Accepted Answer

The Answer of Two solutions (the system),each with a volume of 25.0 mL at 25.0°C,are mixed in a beaker.A reaction occurs between them,and the temperature rises to 35.0°C.After the products have equilibrated with the surroundings,the temperature is again 25.0°C and the total volume is 50.0 mL.No gases are involved in the reaction.Which relationship concerning the change from initial to final states (both at 25.0°C)is correct?
A)ΔU = 0
B)ΔH = 0
C)ΔU > 0
D)q = 0
E)W = 0

Two Solutions (The System),each with a Volume of 25