Topical Questions
These questions are keyed to the major topics in this chapter. Usually a question that is answered at the back of this book is paired with a similar one that is not.
For the reactions of molecular hydrogen with fluorine and with chlorine:
(a) Calculate the enthalpy change for breaking all the bonds in the reactants.
(b) Calculate the enthalpy change for forming all the bonds in the products.
(c) From the results in parts (a) and (b), calculate the enthalpy change for the reaction.
(d) Which reaction is most exothermic?
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