For the reaction 2H2O --> 2H2 + O2, which is the value of delta S

Question

None of the above

undetermined

negative

zero

positive

Answer 1

Assuming the phases are H₂O(l), H₂(g) an O₂(g), we can conclude that ∆S for this reaction is POSITIVE. This is because you are going from 2 moles of liquid water to 3 moles of gaseous products (2 mols H₂ gas + 1 mol O₂ gas).