Consider the oxidation of thiosulfate (S2O3 2- ) to sulfate (SO4 2- ) and the reduction of hypochlorous acid (HOCl) to chloride (Cl- ). a. Write the oxidation half-reaction. b. Write the reduction half-reaction. c. Write the overall balanced reaction. d. Determine the number of electron equivalents per mole for HOCl in this reaction.

The answer is a. stable, hope i ya

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b