Question

balancing chemical equations by oxidation number method - As2S3 + ClO3^- + OH -------> AsO4 ^3- + ClO + SO4 ^2- + H2O​

Answer 1

Answer:

18 OH- + 3 As2S3 + 5 ClO3- → 5 (Cl)- + 6 AsO43- + 9 S + 9 H2O

This is an oxidation-reduction (redox) reaction:

6 AsIII - 12 e- → 6 AsV

(oxidation)

9 S-II - 18 e- → 9 S0

(oxidation)

5 ClV + 30 e- → 5 Cl-I

(reduction)

As2S3 is a reducing agent, As2S3 is a reducing agent, ClO3- is an oxidizing agent.

Reactants:

OH- – Hydroxide source: wikipedia, accessed: 2019-09-27

Other names: Hydroxide ion source: wikidata, accessed: 2019-09-07

As2S3 – Arsenic trisulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02

Other names: Arsenic(III) sulfide source: wikipedia, accessed: 2019-09-27

Appearance: Orange crystals source: wikipedia, accessed: 2019-09-27

ClO3-

Products:

Cl-

AsO43-

S

Names: Sulfur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, S source: wikidata, accessed: 2019-09-07, Sulphur source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04

Appearance: Yellow solid in various forms source: ICSC, accessed: 2019-09-04

H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27

Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27

Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27

Explanation:

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