Question

X COD 75 ml Question 16 Which of the following statements is TRUE? OAHrxn can be determined using constant pressure calorimetry. O All of the above are true. Energy is neither created nor destroyed, excluding nuclear reactions. State functions do not depend on the path taken to arrive at a particular state. AErxn can be determined using constant volume calorimetry.

Answer 1

Correct option:

All of the above are true.

Change in enthalpy is the heat at constant pressure (
ΔΗ = gp
). Hence,
HT
can be determined using constant pressure calorimetry.

State function only depends on the initial and final state of the system. It does not not depend on the path by which the final state is reached from the initial state.

Change in internal energy is the heat at constant volume (
LE=QU
). Hence,
SETTI
can be determined using constant volume calorimetry.

From the first law of thermodynamics, energy is neither created nor destroyed. In nuclear reaction, mass and energy converts according to Einstein's mass-energy equivalence.