Entropy Change question Watch
SO2(g) + ½O2(g) => SO3(g) negative
CO(g) + ½O2(g) => CO2(g) negative
2CO(g) + O2(g) => 2CO2(g) negative
Not entirely sure about these though
Yes. When the number of molecules decreases in the reaction, it is very likely that entropy decreases because the system is becoming more ordered and entropy is a measure of disorder.