Question

A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 824J of heat from its surroundings and has 0.62kJ of P−V work done on it by its surroundings. What is the value of ΔH for this process? What is the value of ΔE for this process?

Answer 1

q_p = delta H
Work done by the surroundings on the system is +
dE = q+w.

Answer 2

A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 827 J of heat from its surroundings and has 0.62 kJ of P−V work done on it by its surroundings.