What is a spontaneous process?  A. is reversible.  B. Is irreversible  C. may be reversible or irreversible depending on the value of ΔS.  D. may be reversible or irreversible depending on whether equilibrium is maintained throughout the process. 2. If a chemical reaction is spontaneous, the total entropy of the chemical systems and its surroundings _______________.  A. increases only if the reaction is exothermic  B. increases only if the reaction is endothermic  C. always increases  D. always decreases 3. Which of the following is NOT a spontaneous process?  A. Sugar dissolving in hot coffee  B. Coffee freezing while you drink it on a warm summer day

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