Chemistry(Please check)

posted by .

Which of the following four processes are accompanied by an increase in entropy?

1. I2 (s) -> I2 (g)

2. 2 I (g) -> I2 (g)

3. 2 NH3 (g) -> N2 (g) + 3 H2 (g)

4. Pb2+ (aq) + 2 OH – (aq) -> Pb(OH)2 (s)

Answers: a. 1 & 2 b. 1 & 3 c. 3 & 4 d. 2 & 4 e. only 3


I am pretty sure that I2(s) -> I2(g) is an increase because it is going from a solid to a gas which has the highest entropy. As you can see there is not an answer choice for only choice 1 so I think that choice 2 might be an increase as well but I am not sure.

Would you agree that 2I(g) -> I2(g) is increasing?

  • Chemistry(Please check) -

    I think that 2NH3(g) -> N2(g) + 3H2(g) is actually the other answer that is increasing because the number of moles increases from 2 to 4. So I chose answers 1 and 3. Is this correct?

  • Chemistry(Please check) -

    1 and 3 are correct. Note that 2I^- --> I2 you are decreasing entropy.

  • Chemistry(Please check) -

    Thank you!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3?
  2. chemistry

    N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3?
  3. chemistry

    N2(g)+3H2(g)<=>2NH3(g) +▲H if uou are preparing NH3, hiw does the following increase the yield of NH3?
  4. Chemistry

    Predict how the entropy of the substance is affected in the following processes: a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k) b)Br2 (l, 1 bar, 25 degree C) --> Br2 (g, 1 bar, 25 degree C) C)Fe (s, 1 bar, 250 degree C)--> …
  5. Chem please help

    What does the second law of thermodynamics say about entropy?
  6. chemistry

    what statements are true for the standard entropy change for the conversion of ozone to oxygen?
  7. chemistry

    The question is: What statements are true for the standard entropy change for the conversion of ozone to oxygen?
  8. chemistry

    true or false Entropy always tend to favor mixing Mixing result in positive change in entropy Entropy allows endothermic processes to be spontaneous Pure liquids don't have entropy Addition of salt to water increases entropy Entropy …
  9. Chemistry

    Which of the following statements is true?
  10. Chemistry

    refer to the reaction 2NH3 (g) ↔ N2 (g) + 3H2 (g), and ΔH = 92.2 kJ. 1.What will be the effect on the concentration of H2 if the temperature decreases?

More Similar Questions