Saved In basic solution, Se and So, ions react spontaneousynd 035 v (a) Write th

Question

Saved In basic solution, Se and So, ions react spontaneousynd 035 v (a) Write the balanced half-reactions for this process. Include the states for each reactant and product (b) If E 25e2-(aq) + 2so,raq) + 3H200 2Sels) + 60H(aq) +52032-lag) is-057 V, calculate E sulfite selenium Reduction half-reaction: Feedback 01He This is an oxidation-reduction reaction in which electrons are transferred from one substance to another substance. Oxidation half-reaction: You need to identify the substances involved in the oxidation half. reaction and the reduction half-reaction. You then need to mass balance each half-reaction by adding H-0 to balance oxygen atoms and H" to balance hydrogen atoms 2- eleni-33 Guided Solution

Explanation / Answer

Reduction half reaction (basic medium)

This is can be balanced by using io-lectron method

SO32- ---> S2O32-

Balancing atoms other than O and H

2SO32- ----> S2O32-

Balancing O atoms by adding H2O on deficient side

2SO32- ----> S2O32- + 3H2O

Balancing H atoms by adding H+ ions on deficient side

2SO32- + 6H+ ----> S2O32- + 3H2O

Add one OH- ions for every H+

2SO32- + 6H+ + 6OH- ----> S2O32- + 3H2O + 6OH-

2SO32- + 6H2O ----> S2O32- + 3H2O + 6OH-

2SO32- + 3H2O ----> S2O32- + 6OH-

Balance the charge with electrons

2SO32-(aq) + 3H2O(l) + 4e- ----> S2O32- (aq) + 6OH-(aq)

This is the reduction half reaction

For both half reactions we have to equate the electrons

Please correct

oxidation half reaction

2Se2-(aq) ---> 2Se(s) + 4e-

Now it will accept reduction half reaction

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