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When 25.00 mL of unknown were passed through a Jones reductor, molybdate ion (MoO_4^2-) was...

Question:

When 25.00 mL of unknown were passed through a Jones reductor, molybdate ion (MoO_4^2-) was converted into Mo^3+. The filtrate required 16.43 mL of 0.01033 M KMnO_4 to reach the purple end point. MnO_4^- + Mo^3+ ? Mn^2+ + MoO_2^2+ A blank required 0.02 mL. Balance the reaction. (Use the lowest possible coefficients. Omit states-of-matter.)

Find the molarity of molybdate in the unknown.

Redox Reaction:

A redox (oxidation-reduction) reaction involves change in oxidation number of a species. When a species undergoes reduction half-reaction, it gains electrons and its oxidation number decreases. The species being reduced is the oxidizing agent. When a species undergoes oxidation half-reaction, it loses electrons and its oxidation number increases. The species being oxidized is the reducing agent.

Answer and Explanation: 1

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The half-reactions and the balanced redox reaction are:


reduction half-reaction: ({eq}\rm MnO_{4}^{-}+8H^{+}+5e^{-}\rightarrow...

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Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

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Chapter 10 / Lesson 13
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Learn about oxidizing and reducing agents, how to find them, and how to identify them in redox reactions. Learn about the different types of redox reactions and how to identify a redox reaction.


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