For the reaction, shown below, determine which statements are True and which are

Question

For the reaction, shown below, determine which statements are True and which are False.

3Fe(s) + Cr2O72-(aq) +14H+(aq) ? 3Fe2+(aq) + 2Cr3+(aq) + 7H2O(l)       ?o=1.77V

True False  The oxidizing agent is Fe (s)
True False  The chromium half-reaction takes place in a neutral solution.
True False  The reducing agent is Fe2+ (aq)
True False  The oxidation state of chromium in dichromate is +6.
True False  The oxidation state of oxygen changes from 0 to -2.
True False  The highest oxidation state for chromium in this reaction is +7

Explanation / Answer

This reaction occurs in acidic medium as reaction involves H+ ion.

here Fe is oxidized to Fe2+ and Cr2O72- is reduced to Cr3+.

so considering these informations,

False..................>The oxidizing agent is Fe (s)

because Fe is reducing agent.

False ...............> The chromium half-reaction takes place in a neutral solution.

because this is occurs in acidic medium.
False ..................> The reducing agent is Fe2+ (aq)

because Fe is reducing agent.
True ..................> The oxidation state of chromium in dichromate is +6.
False ................> The oxidation state of oxygen changes from 0 to -2.

because oxidation state of O does not change.
False ...................> The highest oxidation state for chromium in this reaction is +7

because highest oxidation state for chromium in this reaction is +6.

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