Question

1. Estimate the enthalpy (kJ) from bond energies
CCl₄(g) + O₂(g) → CO₂(g) + 2Cl₂(g)

2. Estimate the enthalpy (kJ) from bond energies

H₂(g) + CO₂(g) → H₂O(g) + CO(g)

3. Consider the condensation reaction of CCl₄. Indicate ΔS^o > 0, ΔS^o ~ 0, or ΔS^o < 0

4. Consider the following reaction: CaCO₃(s) → CaO(s) + CO₂(g), Indicate if ΔS^o is >0, <0, or ~0

5. Consider the condensation reaction of CCl₄ and select the accurate statement, (consider signs of ΔS^o and ΔH^o)

6. ΔH of the following reaction was estimated from bond energies and found to be -97 kJ.

N₂(g) + 3H₂(g) ---> 2NH₃(g)

Fill in the blank with the correct statement: This reaction _______
(hint: consider the signs of ΔH and ΔS and find the sign of ΔG to report on spontaneity)

a. is non-spontaneous at all temperatures

b. is spontaneous at all temperatures
c. can be spontaneous or non-spontaneous depending on temperature.

Answer 1

© Celep (9) +0,19) → COLC9] + 2 ch (9) amend to=o o=020 +2cl-chan a ! ! S ezo d-el Catby 339 KT/mol 49885 mil 732 kJ/mol 242 kJ/mol Bond. cad cod a . 0=0 Enthalpies Ahyan = 4 AHO CU + AH0=o -[24HC=0 +2 415 elde] = 4x339 +498 +[2x732 +2*2423 Atnao - 94 kJ/mol Hacg) CO2(9) H2009) + cocg) @ AH CH-H) = 436 kg/mid's AHD OCH = 463 Kolmol Atoco=1072 Atran = AtbH-H + 24 H6.C=0 - [2 AH60-H + AHG CEO] 3 436 +27 732 - [2x.4,63 +1072] id-98 kJ/mol 1 6 ! See ③ cole (g) :- ecly (d) ریدر ره عید رو می - Entropy decreases 45°<0 © Cacąącs) → Caors) + CO2C9) CS Scanned Solid Solid gouve! in CamScanner Acoso !