Cr2  + xH+ + ye–
® 2Cr3+ +AH2O
Balance the above reaction and find x, y and A.
Cr2 + xH+ + ye– ® 2Cr3+ +AH2O
Balance the above reaction and find x, y and A.
Option 1 -
x = 7, y = 6, A = 14
Option 2 -
x = 14, y = 6, A = 7
Option 3 -
x = 14, y = 3, A = 7
Option 4 -
x = 8, y = 2, A = 1
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1 Answer
 - 
Correct Option - 2
Detailed Solution:The balanced reaction is.
Cr2
 + 14H+ + 6e– ® 2Cr3+ + 7H2Ox = 14
y = 6
A = 7
 
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