(Entropy, ΔS°) Predict the sign of ΔS for the following.

Question

a) a lake freezing

b) precipitating lead chloride

c) a candle burning

d) weeding a garden

Answer 1

a) a lake freezing ∆S is -

b) precipitating lead chloride ∆S is -

c) a candle burning ∆S is +

d) weeding a garden ∆S is +

But if you don't understand why, that's a problem. You won't be able to answer similar questions on the test.