Chemical portal

CHEMICAL FORUM


Math Forum

Suggestion?
Contact webmaster





WebQC.Org
online education
free homework help
chemistry problems
questions and answers


© 2014 Vitalii Vanovschi
All rights reserved

By using this website, you
signify your acceptance of
Terms and Conditions
and Privacy Policy.


  Sign up now to (1) ask a chemistry question, (2) share your expertise, (3) engage in conversation with other chemists.
Post new topic Reply to topic
   Chemical Community Forum Index : Chemistry forum
View previous topic :: View next topic  
Author Message
Alison
Newbie
Newbie


Joined: 13 Nov 2007
Posts: 1
PostPosted: Tue Nov 13, 2007 3:44 pm    Post subject: Iodiometric Analysis of Sodium Peroxoborate Reply with quoteFind all posts by Alison

Please help!!
Iodometric Analysis of Sodium Peroxoborate - can't find the equations anywhere!!

(1) Sodium Peroxoborate + Potassium Iodide + Sulphuric Acid = ??????

(2) Product from equation 1 + Sodium Thiosulfaye = ??????

HELLLLLP!! (Due tomorrow afternoon!)
Back to top
View user's profileSend private message
Sam
Staff Member
Staff Member


Joined: 13 May 2006
Posts: 53
PostPosted: Wed Nov 14, 2007 10:25 am    Post subject: Re: Iodiometric Analysis of Sodium Peroxoborate Reply with quoteFind all posts by Sam

Alison wrote:
Please help!!
Iodometric Analysis of Sodium Peroxoborate - can't find the equations anywhere!!

(1) Sodium Peroxoborate + Potassium Iodide + Sulphuric Acid = ??????

(2) Product from equation 1 + Sodium Thiosulfaye = ??????

HELLLLLP!! (Due tomorrow afternoon!)

(1) Na2[B2(OH)4(O2)2] + 4 KI + 3 H2SO4 = Na2SO4 + 2 K2SO4 + B2O3 + 5 H2O + 2 I2
from: http://www.webqc.org/balance.php?reaction=Na2%5BB2%28OH%294%28O2%292%5D%2BKI%2BH2SO4%3DNa2SO4%2BK2SO4%2BB2O3%2BH2O%2BI2

(2) I2 + 2Na2S2O3 = 2NaI + Na2S4O6

Hope that helps.
Back to top
View user's profileSend private message
Display posts from previous:   
Post new topic Reply to topic
   Chemical Community Forum Index : Chemistry forum Page 1 of 1

 
Jump to:  





Page Chemical Forum from the Chemical Portal
WebQC.Org online education - help with your degree online