1) Which of the following processes will result in an increase of entropy of the

Question

1)

Which of the following processes will result in an increase of entropy of the system?

H2O (g) H2O (l)

2)

Which of the following combinations of H and S describe a process that is onlyspontaneous at low temperatures?

H: negative, S: positive

3)

What does the standard change in Gibbs free energy (G° ) of a reaction tell us about the equilbrium constant (K) for that reaction under standard conditions?

A negative G° indicates that product formation is favored, and K will be greater than 1.

4)

When the following equation is correctly balanced in acidic solution, how many electrons are transferred?

Cu+ (aq) + Mn2+ (aq) Cu (s) + MnO4- (aq)

5)

Which species is being oxidized in the following reaction?

Cu (s) + Fe2+ (aq) Cu2+ (aq) + Fe (s)

Explanation / Answer

1)

b) 2NH3=N2+3H2

two molecules are forming from one. so entropy increases

2)

delta H: negative delta S: postive

3)

a negative delta G indicates that reaction is favoured and K is greater than 1

4)

5 electrons

5)

Cu is being oxidised

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