1. Balance the following redox reactions using the half-reaction method make sure to include at...
Question:
1. Balance the following redox reactions using the half-reaction method; make sure to include at least the following steps, as needed:
- writing out the reduction and oxidation reactions separately
- balancing the atoms in each half-reaction
- balancing the charge in each half-reaction
- balancing the electrons between the oxidation and reduction reactions
- adding the reactions
- simplifying terms (and adding {eq}\, \rm OH^-\, {/eq} in basic reactions)
- having a completely balanced reaction
a. {eq}\, \rm S^{2-} + Cr_2O_7^{2-} \longrightarrow S + Cr^{3+}\ (acidic\ solution) \, {/eq}
b. {eq}\, \rm CrO^{-4} + Fe(OH)_2 \longrightarrow Cr(OH)_3 + Fe(OH)_3\ (basic\ solution) \, {/eq}
Redox Reaction
Oxidation reaction occurs when a species loses electrons while reduction reaction takes place when a species gains electrons. The combination of an oxidation and reduction reaction is called a redox reaction.
Answer and Explanation: 1
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Step 1: Write the reduction and oxidation reactions separately.
Reduction: {eq} \rm Cr_2O_7^{2-} \to Cr^{3+} {/eq}
Oxidation: {eq} \rm...
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Chapter 2 / Lesson 12What is a redox reaction (oxidation reduction reaction)? Learn about redox reaction examples, balancing redox reactions, and the redox reaction definition.