Hi All,(adsbygoogle = window.adsbygoogle || []).push({});

[itex]\mathrm{Fe^{3+}(aq) + SCN^{-} (aq) \rightleftharpoons FeSCN^{2+}(aq)}[/itex]

I add some [itex]\mathrm{NaHSO_{3}(s)}[/itex] to the above reaction !

This makes the above chemical solution sour, consequently in a sour solution [itex]\mathrm{HSO^{-}_{3}}[/itex] will reduce Fe^{3+} to Fe^{2+}, meanwhile [itex]HSO_{3}^{-}[/itex] is itself oxidated to [itex]SO^{2-}_{4}[/itex].

a/ The color of the original resolution changes then adding [itex]\mathrm{NaHSO_{3}(s)}[/itex] to yellow.

b/ By adding [itex]\mathrm{NaHSO_{3}(s)}[/itex] to the orginal solution the equilibrium direction changes, such that it runs from right to left.

c/ I need help writing the reaction between [itex]HSO^{-}_{3}[/itex] and [itex]SO^{-}_{4}[/itex].

d/ Which influence does the adding of [itex]HSO^{-}_{3}[/itex] have on the concentration of [itex]Fe^{3+}[/itex]

I hope that there someone out there who is willing to assist me since this is my last post !

Sincerely

Fred

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Oxidation related question

**Physics Forums | Science Articles, Homework Help, Discussion**