In the spaces provided, write the correct coefficient for each species when the reaction is properly balanced (acidic solutions). Do not worry about indicating the amount of any H+ or H2O that may be present.(a) _________Fe2+(aq) + _________Cr2O72–(aq) → ________Fe3+(aq) + _________Cr3+(aq)(b) __________S8(s) + ______________O2(g) → ___________SO42–(aq)

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Asked Nov 22, 2019
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  1. In the spaces provided, write the correct coefficient for each species when the reaction is properly balanced (acidic solutions). Do not worry about indicating the amount of any H+ or H2O that may be present.

(a) _________Fe2+(aq) + _________Cr2O72–(aq) → ________Fe3+(aq) + _________Cr3+(aq)

(b) __________S8(s) + ______________O2(g) → ___________SO42–(aq)

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Expert Answer

Step 1

 

a)

The given reaction is

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_Cr3*(aq) Fe3 (aq) _Cr2072 (aq) - Fe2 (aq)+

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Step 2

The corresponding values in the blanks are

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6Fe3+2Cr3 6FE2 Cr2O

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Step 3

The complete reaction with H+...

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бFe+ + 2Cr+ + TH2O + 14 Н* 6Fe Cт0,2-

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