How many electrons are involved in the oxidation of 1-propanethiol to each of the following compounds. (See Fig. 10.3 for detailed Lewis structures.)

(a) 1-propanesulfonic acid, CH₃CH₂CH₂SO₃H 

(b) 1-propanesulfenic acid, CH₃CH₂CH₂S—OH

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R-SH thiol R—S—S—R_R—S—ÖH disulfide R₂P: phosphine FIGURE 10.3 sulfenic acid :O: R₂P=Ö phosphine oxide R-S-OH sulfinic acid Increasing sulfur oxidation level :O: R-P-ÖH :OH phosphonic acid :0: Increasing phosphorus oxidation level R-S-OH HO -S-OH :O: sulfonic acid :0: :0: :0: sulfuric acid HÖ- -Р-ОН :OH phosphoric acid