chemical reaction

Chemistry and homework help forum.

Organic Chemistry, Analytical Chemistry, Biochemistry, Physical Chemistry, Computational Chemistry, Theoretical Chemistry, High School Chemistry, Colledge Chemistry and University Chemistry Forum.

Share your chemistry ideas, discuss chemical problems, ask for help with scientific chemistry questions, inspire others by your chemistry vision!

Please feel free to start a scientific chemistry discussion here!

Discuss chemistry homework problems with experts!

Ask for help with chemical questions and help others with your chemistry knowledge!

Moderators: Xen, expert, ChenBeier

Post Reply
ndansira
Newbie
Newbie
Posts: 1
Joined: Fri May 30, 2008 7:51 am

chemical reaction

Post by ndansira »

Can some one tell me what the products are when sodium bisulfite (NaHSO3) reacts with sodium hypochlorite(NaOCl)?
Top
Zedekiah
Staff Member
Staff Member
Posts: 77
Joined: Thu May 01, 2008 5:33 pm

Post by Zedekiah »

Code: Select all

HSO3(-) + OCl(-)   =>    SO4(2-)  +   Cl(-)
This occurs in basic conditions; in acidic conditions chlorine is formed.

Code: Select all

HSO3(-) + 3OH(-)  =>   SO4(2-) + 2H2O  +2e(-)

H2O + OCl(-) + 2e(-)  =>  Cl(-)  + 2OH(-)

Code: Select all

[size=18]NaHSO3 + NaOCl + NaOH   =>   Na2SO4 + NaCl + H2O[/size]
In acidic conditions :

Code: Select all

HSO3(-) + OCl(-)   =>    SO4(2-)  +   Cl2


HSO3(-)  + H2O  =>   SO4(2-)  +3 H(+) +2e(-)

2 OCl(-) + 4 H(+) + 2e(-)  =>  Cl2  + 2 H2O

[size=18]NaHSO3 + 2NaOCl + H(+)  =>  Cl2 + H2O + Na2SO4[/size]
It is probably more complicated in acidic conditions because of the equilibrium hypochlorite has with hydroxide and aqueous chlorine, but that is a pretty good approximation.
Top
Post Reply

Return to “Chemistry forum”