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Gibbs Free Energy Practice Problems

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Last updated over 5 years ago
15 questions
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Question 1
1.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)

C4H8O3N2+ H2O → 2 C2H5O2N

Question 2
2.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)

C4H8O3N2+ H2O → 2 C2H5O2N

Note: Be sure to include units.

Question 3
3.

Question 4
4.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)

H2O → H2 + ½ O2

Question 5
5.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)
H2O → H2 + ½ O2

Note: Be sure to include units.

Question 6
6.

Question 7
7.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)

3 CH4+ NH3 + 3 O2 → C3H7O2N + 4 H2O

Question 8
8.

Calculate the change in Gibb's free energy (ΔG) for the following reactions given the free energy values provided. Which reactions can happen spontaneously?: Recall: ΔG = G (final) – G (initial)

3 CH4+ NH3 + 3 O2 → C3H7O2N + 4 H2O

Note: Be sure to include units.

Question 9
9.

Question 10
10.

Calculate the Gibbs free energy change (ΔG) for the following chemical reaction:

ATP --> ADP + Pi

The reaction occurs at 68 °F, the change in heat (ΔH) = 19,070 cal, and the change in entropy (ΔS) = 90 cal/K.

Question 11
11.

Calculate the Gibbs free energy change (ΔG) for the following chemical reaction:

ATP --> ADP + Pi

The reaction occurs at 68 °F, the change in heat (ΔH) = 19,070 cal, and the change in entropy (ΔS) = 90 cal/K.

Note: Be sure to give your answer in kcal.

Question 12
12.

Calculate the Gibbs free energy change (ΔG) for the following chemical reaction:

glutamate + NH3 --> glutamine + H2O

The reaction occurs at 68 °F, the change in heat (ΔH) = 4103 cal, and the change in entropy (ΔS) = 2.4 cal/K.

Question 13
13.

Calculate the Gibbs free energy change (ΔG) for the following chemical reaction:

glutamate + NH3 --> glutamine + H2O

The reaction occurs at 68 °F, the change in heat (ΔH) = 4103 cal, and the change in entropy (ΔS) = 2.4 cal/K.

Note: Be sure to give your answer in kcal.

Question 14
14.

Question 15
15.

Is this reaction...
spontaneous
nonspontaneous
Is this reaction...
spontaneous
nonspontaneous
Is this reaction...
spontaneous
nonspontaneous
Which of the reactions occur spontaneously?
ATP --> ADP + Pi
glutamate + NH3 --> glutamine + H2O
Which of the reactions is endergonic?
ATP --> ADP + Pi
glutamate + NH3 --> glutamine + H2O