chem quiz 6

When a reaction is spontaneous, Δ G < 0.

• True

• False

When a reaction is exothermic and the entropy increases throughout the reaction, the reaction is spontaneous at all temperatures.

• True

• False

When a reaction is spontaneous, it necessary happens quickly.

• True

• False

When Δ G for a reaction is negative work can be performed as a result of the reaction.

• True

• False

For reactions that are non-spontaneous at lower temperatures and spontaneous at higher temperatures, both Δ H and Δ S are negative.

• True

• False

Calculate Δ G, in kJ, for the following reaction at 2 °C if Δ H° = 110.5 kJ and Δ S° = 136 J/K.
COCl₂(g) --> CO(g) + Cl₂(g)
Round your answer to the nearest 0.1 kJ. Do not enter any units with your answer.

Use the thermodynamic information given below to determine the conditions under which a chemical reaction is spontaneous

A reaction is exothermic and molecular disorder increases from reactants to products.

• The reaction is not spontaneous at any temperature.

• The reaction is spontaneous at low temperatures and non-spontaneous at high temperatures.

• The reaction is spontaneous at all temperatures.

• The reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.

Use the thermodynamic information given below to determine the conditions under which a chemical reaction is spontaneous

A reaction is endothermic and molecular disorder decreases from reactants to products.

• The reaction is not spontaneous at any temperature.

• The reaction is spontaneous at low temperatures and non-spontaneous at high temperatures.

• The reaction is spontaneous at all temperatures.

• The reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.

Use the thermodynamic information given below to determine the conditions under which a chemical reaction is spontaneous

A reaction is exothermic and molecular disorder decreases from reactants to products.

• The reaction is not spontaneous at any temperature.

• The reaction is spontaneous at low temperatures and non-spontaneous at high temperatures.

• The reaction is spontaneous at all temperatures.

• The reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.

Use the thermodynamic information given below to determine the conditions under which a chemical reaction is spontaneous

A reaction is endothermic and molecular disorder increases from reactants to products

• The reaction is not spontaneous at any temperature.

• The reaction is spontaneous at low temperatures and non-spontaneous at high temperatures.

• The reaction is spontaneous at all temperatures.

• The reaction is non-spontaneous at low temperatures and spontaneous at high temperatures.