For a reaction carried out at constant volume in a rigid

CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics

Problem

For a reaction carried out at constant volume in a rigid, sealed container, 450 kJ of heat is released to the surroundings and no other energy transfer occurs. From the perspective of the reacting mixture, which set of signs for q, w, and ΔU is correct? (a) q=+,  w=0,  ΔU=+q = +,\; w = 0,\; \Delta U = + (b) q=−,  w=0,  ΔU=−q = -,\; w = 0,\; \Delta U = - (c) q=−,  w=0,  ΔU=+q = -,\; w = 0,\; \Delta U = + (d) q=−,  w=−,  ΔU=−q = -,\; w = -,\; \Delta U = -

Related theory

Browse the problem library