試題詳解

85. Which of the following statements correctly describes the signs of q (heat) and w (work) for the following exothermic process at P = 1 atm and T = 370 K? H₂O_(g) ―→ H₂O_(l)
(A) The q and w are both negative.
(B) The q is positive, but the w is negative.
(C) The q and w are both positive.
(D) The q is negative, but the w is positive.
(E) The q and w are both zero.