a. The production of titanium dioxide occurs slowly at room temperature, and heat is added to the reaction to speed it up. Can this information be used to predict the spontaneity of the reaction? Briefly explain your reasoning.
b. The vaporization of liquid bromine is spontaneous at room temperature. Is the condensation of bromine vapor also spontaneous at room temperature? Briefly explain your reasoning. )
c. In order to begin the thermite reaction, an initial spark of energy must be added. After that, though, the reaction produces large amounts of light and heat. Briefly explain whether the reaction is likely to be spontaneous or non-spontaneous.
d. Briefly explain how a system that undergoes a favorable enthalpy change but an unfavorable entropy change can be spontaneous.
e. Briefly explain how the second law of thermodynamics relates to spontaneity.