3
QuizMultiple Choice

Enthalpy, Entropy, and Free Energy — Quiz

Question 3 • Chemistry

What is triangle cap s for the reaction cap n sub 2 times g plus cap o sub 2 times g rightarrow 2 NO ? Use triangle cap g is equal to 173 point 3 kJ at 303 point 0 cap k and triangle cap h is equal to 180 point 7 kJ Use triangle cap g is equal to triangle cap h minus cap t triangle cap s

Answer
A
24 point 4 2 cap j over cap k
B
24 point 4 2 kJ over cap k
C
7 point 4 kJ over cap k
D
7 point 4 cap j over cap k

Explanation

Rearrange ΔG = ΔH − TΔS to get ΔS = (ΔH − ΔG)/T. Substituting the values gives (180.7 − 173.3) kJ ÷ 303.0 K = 0.02442 kJ/K. Converting kilojoules to joules gives 24.42 J/K, so the correct choice is 24.42 J/K.

AI-written and checked against the verified answer.

Previous
Next