Using the data sheet (see attachment) calculate delta S values for the following reactions. In each case explain the sign of delta S.
N2H4(g) + H2(g) --> 2NH3(g)
2Al(s) + 3Cl2(g) --> 2AlCl3(g)
Mg[OH]2(s) + 2Hcl(g) --> MgCl2(s) + 2H20(l)
2CH4(g) --> C2H6 + H2(g)
1. dH = entropy of products - entropy of reactants
dH = [2x 192.5] - [238.5 + 130.58] = 15.92 J/molK
There is a small increase in entropy as the gases become somewhat smaller and hence more ...
The entropy change dS is calculated for some reactions. The sign of the entropy change is also explained in each case.
Thermodynamics in a Reaction for Entropy Change
Thank you so much for any help you can offer.
Calculate the entropy change (J/mole.K) of the reaction. The molar entropies [S] are given in brackets after each substance.
2C2H2 (g) [200.8] + 5 O2 (g) [205.0] → 4 CO2 (g) [213.6] + 2H2O (l) [69.91]