Problem: Which of the following would not be a redox reaction?A. the combustion of a hydrocarbon in oxygen gasB. the reaction that occurs when aqueous calcium chloride is mixed with aqueous sodium carbonateC. the reaction between iron metal and sulfur to form iron(II) sulfideD. the reaction between zinc metal and aqueous hydrochloric acidE. the reaction that occurs when gaseous chlorine is bubbled through an aqueous potassium iodide solution

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A. Oxidation states of elements in a combustion reaction remain unchanged hence it is not a redox reaction.

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Problem Details

Which of the following would not be a redox reaction?

A. the combustion of a hydrocarbon in oxygen gas

B. the reaction that occurs when aqueous calcium chloride is mixed with aqueous sodium carbonate

C. the reaction between iron metal and sulfur to form iron(II) sulfide

D. the reaction between zinc metal and aqueous hydrochloric acid

E. the reaction that occurs when gaseous chlorine is bubbled through an aqueous potassium iodide solution

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