Fill in the blank question about the cell voltage of a voltaic cell.

The cell voltage, E, is _________ for a reaction taking place in a voltaic cell. a. negative b. positive c. zero d. oxidative e. reductive

Multiple choice question about the effect on Gibbs free energy from increasing the reactant or product pressure.

In a gas phase reaction, what is the effect of increasing reactant or product pressure on the standard Gibbs free energy? a. it increases due to decreased entropy b. it decreases due to decreased entropy c. it increases due to increased enthalpy d. it may either increase or decrease e. it is unchanged

True or false questions about delta G and spontaneity.

Which of the following statements are FALSE? a. A reaction is spontaneous if delta G < 0 b. If delta G = 0, the system is at equilibrium c. If delta G = 0, the delta S = delta H d. If delta G > 0, then a reaction is not spontaneous e. Delta G is referred to as Gibbs free energy

Gibbs free energy

Which of the following are conditions for the standard Gibbs free energy? a. Ions or molecules in solution are present at one molar concentrations b. the temperature of the system is at 298K c. gases are present at one atmosphere partial pressure d. answers a and c are correct e. answers a, b, and c are corre ...continues

reactions

Calculate "delta" S for the following reaction: H2(g) + Br2(l) --> 2HBr(g) given: S[H2(g)] = 0.131 kJ/K S[Br2(l)] = 0.152 kJ/K S[HBr(g)] = 0.199kJ/K a. 0.482 kJ/K b. 0.681 kJ/K c. 0.115 kJ/K d. -0.084 kJ/K e. 0.084 kJ/K

Multiple choice question about relationship between delta S and G.

Predict the signs of delta S and delta H for the melting of ice at 300K? a. Delta H > 0 and delta S > 0 b. Delta H > 0 and delta S < 0 c. Delta H < 0 and delta S > 0 d. Delta H < 0 and delta S < 0 e. Not enough information provided to answer question

Multiple choice question about relationship between delta S and G.

Predict the sign of delta S and delta H for the combustion of gasoline at 500K. a. Delta H > 0 and delta S > 0 b. Delta H > 0 and delta S < 0 c. Delta H < 0 and delta S > 0 d. Delta H < 0 and delta S < 0 e. Not enough information provided to answer question

Multiple choice question about the characteristics of delta G.

If delta G is negative at all temperatures, then which of the following statements must be true? a. Delta H > 0 and delta S > 0 b. Delta H > 0 and delta S < 0 c. Delta H < 0 and delta S > 0 d. Delta H < 0 and delta S < 0 e. None of the above

Multiple choice question about the affect on Standard Gibbs free energy when the reactant or product pressure is increased.

In a gas phase reaction, what is the effect of increasing reactant or product pressure on the standard Gibbs free energy? a. Delta G increases due to decreased entropy b. Delta G decreases due to decreased entropy c. Delta G increases due to increased enthalpy d. Delta G may either increase or decrease e. De ...continues

Entropy

What is the relationship between 'delta' G and E (cell voltage)? 'delta' G = ?