Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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The alkali metals are readily soluble in liquid ammonia to give bright blue metastable solutions with unusual properties. Such solutions are unstable with respect to amide formation, as shown for potassium:
  2K + 2NH3   2KNH2 + H2


Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.
      Enter the oxidation numbers under each substance in the box corresponding to the element label to the left.

      If a box is not needed, leave it blank.


  K   NH3   KNH2   H2
   
K              
N              
H              


For the reaction as written, the total number of electrons lost is  and the total number of electrons gained is .
 
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The alkali metals are readily soluble in liquid ammonia to give bright blue metastable solutions with unusual properties. Such solutions are unstable
with respect to amide formation, as shown for potassium:
2K + 2NH3 → 2KNH, + H2
Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained.
Enter the oxidation numbers under each substance in the box corresponding to the element label to the left.
If a box is not needed, leave it blank.
K
NH3
KNH,
H2
K
H
For the reaction as written, the total number of electrons lost is
and the total number of electrons gained is
Transcribed Image Text:The alkali metals are readily soluble in liquid ammonia to give bright blue metastable solutions with unusual properties. Such solutions are unstable with respect to amide formation, as shown for potassium: 2K + 2NH3 → 2KNH, + H2 Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained. Enter the oxidation numbers under each substance in the box corresponding to the element label to the left. If a box is not needed, leave it blank. K NH3 KNH, H2 K H For the reaction as written, the total number of electrons lost is and the total number of electrons gained is
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