Question 1 of 10 Map General Chemistry University Science Books 4th Edition pres

Question

Question 1 of 10 Map General Chemistry University Science Books 4th Edition presented by Sapling Learn Donald McQuarrie. Peter A. Rock .Ethan Gallogly In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction (using lowest whole-number coefficients) Identify the oxidizing agent and reducing agent. oxidizing agent reducing agent O hydrogen O hydrogen oxygen oxygen water water Determine the number of electrons transferred in the balanced chemical equation Number Previous ® Give Up & View solution Check Answer Next Exit Hint It may help to review the general rules for assigning oxidation states. oxidizing agent species that gets reduced gain of electrons decrease in oxidation state reducing agent species that gets oxidized oss of electrons increase in oxidation state

Explanation / Answer

1) The balanced chemical equation is - 2H2 (g) + O2 (g) ---------> 2 H2O (l)

2) Here - Oxidizing agent = O2 , Reducing agent = H2

3) 2 e- (H2 converted from "0" to +1(2 H+ ) and O2 converted to O2-)

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