A Mixture of Hydrogen and Chlorine Remains Unreacted Until It

question 118

Multiple Choice

A mixture of hydrogen and chlorine remains unreacted until it is exposed to ultraviolet light from a burning magnesium strip. Then the following reaction occurs very rapidly. Select the statement below that best explains this behavior.

• A) The reactants are thermodynamically more stable than the products.
• B) The reaction is spontaneous, but the reactants are kinetically stable.
• C) The reaction has a small equilibrium constant.
• D) The ultraviolet light raises the temperature of the system and makes the reaction more favorable.
• E) The negative value for ΔS slows down the reaction.

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National Average

A statistic that represents an average or central value reflecting a condition or attribute throughout a nation.

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Infections that occur after surgery in the part of the body where the surgery took place, posing significant risks for recovery.

Sample Proportion

The ratio of members in a statistical sample that are part of a particular subset of that sample.

National Average

A statistic or measure that represents the average value for a given characteristic across an entire nation.