Answer the question completely ! Only the first part answered previously 4.(20pt

Question

Answer the question completely ! Only the first part answered previously 4.(20pts) 0) 10pts) In each pair choose the molecule which has the higher molar entropy under the same conditions. Assume that conditions are such that all molecules are gases (a) N,O, (1 atm, 1 mole, T-400°CNO-(I atm, 1 mole, T- 40 0°C) (b) BrCI(, l mole,l atm, T-25 , BrCI(g, l mole, l atm, T-45 (c) COMs, 1 mole, T, 1 atm) , CO./0, 1 mole, T, 1 atm) (d) F(g. 1 mole, T, 1 atm) , F-(g 1 mole, T, 1 atm) (e) Arlg, 1 mole, 1 atm, T), Xelg, I mole, I atm, T) () 10pts Without doing any calculations, arrange the following reactions in increasing values of S Justify your answer (a) H(g) + 04g)> 2H 00) (b) K(s)+ O(g)>KO(s) c) NH.C(s)NH(g)+ HCKg) (d) N(g)+3 H(g)> 2 NH (g) (e) CH(g)+ H,O)CO(g)+3 Hg)

Explanation / Answer

4) ¡)

a) N2O5

b) BrCl at 45

c) CO2(l)

d) F2

e) Xe

ii) Answer

b < a < d < e < c

Explanation

b) is gas to solid conversion, so entropy is much decreased and S value is most negative

c) is solid to gas conversion , so entropy is much increased and S value is most positive

a) is gas to liquid conversion, decreasing of enropy is next to gas to solid conversion(b)

e) liguid to gas conversion , so increasing entropy but this increasing is less than the solid to gas conversion ( c)

d) gas to gas but no of mole increasd ,so increase in entropy but this increasing is less than liquid to gas conversion(e)

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