Question

Calculate the entropy change in surroundings when 1.00 mol of H₂O_(l) is formed under standard conditions. ∆_f^Hθ = –286 kJ mol^–1

Answer 1

It is given that 286 kJ mol^–1 of heat is evolved on the formation of 1 mol of H₂O(l). Thus, an equal amount of heat will be absorbed by the surroundings. qsurr = +286 kJ mol^–1