Which of these changes produces the greatest increase in entropy? (1) CaCO3(s) --> CaO(s) + CO2(g) (2) 2 Mg(s) + O2(g) --> 2 MgO(s) (3) H2O(g) --> H2O(l) (4) CO2(g) --> CO2(s)
I think the correct answer is option 1. The reaction, CaCO3(s) --> CaO(s) + CO2(g), produces the greatest entropy since the products molecules are more disorganized than comparing it to the products of other choices. Entropy is the degree of disorderliness in a system.