Multiple Choice
Two solutions (the system) , each of 25.0 mL volume and 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 one of the following relationships concerning the change from initial to final states (both at 25.0°C) is correct?
A) Δ E = 0
B) Δ H = 0
C) Δ E > 0
D) q = 0
E) w = 0
Correct Answer:
Verified
Correct Answer:
Verified
Q49: Benzene is a starting material in the
Q50: A system initially has an internal energy
Q51: A system expands from a volume of
Q52: Your favorite candy bar, Gummy Beakers, contains
Q53: Standard heats (enthalpies) of formation of compounds,
Q55: Sand is converted to pure silicon in
Q56: If, as a pioneer, you wished to
Q57: The standard heat (enthalpy) of formation of
Q58: A system that does no work but
Q59: The standard state of a substance in