When the following half reaction is balanced under acidic conditions, what are the coefficients of the...
When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? CrO42- + H+ Cr3+ + H2O In the above half reaction, the oxidation state of chromium changes from ______ to_____ .
Homework Answers
Cr in CrO4-2 has oxidation state of +6
Cr in Cr+3 has oxidation state of +3
So, Cr in CrO4-2 is reduced to Cr+3
Reduction half cell:
CrO4-2 + 3e- --> Cr+3
Balance Oxygen by adding water
CrO4-2 + 3e- --> Cr+3 + 4 H2O
Balance Hydrogen by adding H+
CrO4-2 + 8 H+ + 3e- --> Cr+3 + 4 H2O
This is balanced chemical equation in acidic medium
Answer: 1, 8, 1, 4
From +6 to +3
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When the following half reaction is balanced under acidic
conditions, what are the coefficients of the...
When the following half reaction is balanced under acidic conditions, what are the coefficients of the...
When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? Croc-+ Cr3+ + H2O In the above half reaction, the oxidation state of chromium changes from – to -
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When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? н* NO + | NO3¯+ На0 In the above half reaction, the oxidation state of nitrogen changes from O to
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When the following half reaction is balanced under acidic conditions, what are the coefficients of the...
When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? SO42- + H+ SO2 + H2O In the above half reaction, the oxidation state of sulfur changes from ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 to ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7.
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When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? Mn Mno4 In the above half reaction, the oxidation state of manganese changes from to Submit Answer Retry Entire Group 7 more group attempts remaining
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When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? Croc-+ Cr3+ + H2O In the above half reaction, the oxidation state of chromium changes from – to -
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