Question

Use the information in the table to calculate es001-1.jpgSrxn for each of these reactions. Round all answers to nearest whole number.

3H2(g) + N2(g) es001-2.jpg 2NH3(g)
es001-3.jpgSrxn =
J/K
CH4(g) + 2O2(g) es002-1.jpg CO2(g) + 2H2O(g)
es002-2.jpgSrxn =
J/K
2N2(g) + O2(g) es003-1.jpg 2N2O(g)
es003-2.jpgSrxn =
J/K
A 2-column table with 8 rows. Column 1 is labeled Substance. Column 2 is labeled Entropy in joules per mole per Kelvin. 8 entries are: H 2 (g), 130.58. N 2 (g), 191.50. N H 3 (g), 192.5. C H 4 (g), 186.3. O 2 (g), 205.0. C O 2 (g), 213.6. H s 2 O (g) 188.83. N 2 O (g), 220.0.

Answer 1

3H2(g) + N2(g) → 2NH3(g)
Srxn = 2(192.5) − [3(130.58) + 191.50] = −198 J/K

CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)
Srxn = [213.6 + 2(188.83)] − [186.3 + 2(205.0)] = −5 J/K

2N2(g) + O2(g) → 2N2O(g)
Srxn = 2(220.0) − [2(191.50) + 205.0] = −148 J/K