Window Help g Chemist s i D Specific ×A-, Desmos xKW List of b x? Gas Lav x ( se

Question

Window Help g Chemist s i D Specific ×A-, Desmos xKW List of b x? Gas Lav x ( search × ( ? How to x eAssignment/takeCovalentActivity.do?locator-assignment-take&takeAssignmentSessionLocatoras..; ? a 679Sun 3:25 Use the References to access impertant values if needed for this question. When the following half reaction is balanced under acidic conditions, what are the coefficients of the species shown? In the above half reaction, the oxidation state of antimony changes from to Submit Answer Retry Entire Group 5 more group attempts remainingg PreviouS Next

Explanation / Answer

First match the number of Sb, you have 2 on the right and 1 on the left so multiply by 2 SbO

2SbO+ ==== Sb2O5

SbO+, O is -2, to get a +1 oxidation state then Sb must have an oxidation state +3

Sb2O5, O is -2 so it is -2 * 5 = -10 , in order to get 0 you must have +10 coming from Sb, since you have 2 atoms the oxidation state of Sb is +5

Sb "Antimony" goes from 3 to 5

add water on the left side to match the number of oxygens, you have 5 oxygens on the right and 1 on the left

2SbO+ + 3 H2O ==== Sb2O5 + 6H+

on the left side you have +2, on the right side you have +6, you have to add 4 electrons on the right side to get:

2SbO+ + 3 H2O ==== Sb2O5 + 6H+ + 4e-

now you have +2 on the left side and +2 ( 6 - 4 ) on the right side

Sb goes from +3 to +5

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