Results are out! Find what you Get quick advice or join the chat

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

Ionic equation for reaction between chlorine and sodium thiosulphate

Announcements Posted on
Find your uni forum to get talking to other applicants, existing students and your future course-mates 27-07-2015
Win top prizes in our mega results day giveaway... 24-07-2015
  1. Offline

    Does anyone know the ionic equation for the reaction between chlorine and sodium thiosulphate and how to work it out? I kind of get the idea but end up confusing myself!
  2. Offline

    I will take a guess

    2S2O3 + Cl2 ---> 2Cl + S4O6

    May want to verify that : )
  3. Offline

    put the charges in and it looks fine to me.
  4. Offline

    thanks guys, just looked at the question again it says -
    Sodium thiosulphate reacts with chlorine to produce sulphate ions, chloride ions and hydrogen ions. Write a balanced ionic equation for the reaction between chlorine and sodium thiosulphate.

    just wonderin where the hydrogen ions fit into it? lol
  5. Offline


S_2O^{2-}_3+4Cl_2+5H_2O \longrightarrow 10H^++2SO^{2-}_4+8Cl^-

    you can get it from the half equations of the oxidation of thiosulphate to sulphate and reduction of chlorine to chloride

    This reaction would occour rather than the other one I guess is because Chlorine is a stronger oxidising agent than Iodine so can oxidise the thiosulphate

S_2O^{2-}_3 + 5H_2O \longrightarrow 10H^++2SO^{2-}_4+8e^-


Cl_2 + 2e^- \longrightarrow 2Cl^-


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: May 13, 2008
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Did you lie on your personal statement?
New on TSR

Results are coming...

No sweat. Here's all you need to make sure you're ready

Study resources

Think you'll be in clearing or adjustment?

Hear direct from unis that want to talk to you

Get email alerts for university course places that match your subjects and grades. Just let us know what you're studying.

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.