Icebox for Buffers?

Moderators: Chem_Mod, Chem_Admin

Joe Rich 1D
Posts: 32
Joined: Fri Jun 23, 2017 11:39 am
Been upvoted: 1 time

Icebox for Buffers?

Postby Joe Rich 1D » Thu Jul 27, 2017 4:35 pm

Why are we not able to use an icebox when calculating the concentration of H3O+ in a buffer solution of a weak base and its salt?
Last edited by Joe Rich 1D on Fri Jul 28, 2017 7:56 pm, edited 1 time in total.

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: Icebox for Buffers?

Postby Chem_Mod » Thu Jul 27, 2017 4:45 pm

You can and it is more accurate, but also more work.

604744616
Posts: 34
Joined: Sun Jun 25, 2017 3:00 am

Re: Icebox for Buffers?

Postby 604744616 » Fri Jul 28, 2017 4:08 pm

How would we know when to use the Ice box for the buffers? I am really confused with this, can someone please help me with this

Joe Rich 1D
Posts: 32
Joined: Fri Jun 23, 2017 11:39 am
Been upvoted: 1 time

Re: Icebox for Buffers?

Postby Joe Rich 1D » Fri Jul 28, 2017 8:01 pm

When calculating the pH of a buffer solution containing a weak acid/base and its salt, we are making the assumption that the initial concentrations of the acid/base and its respective ion (which is supplied initially by the salt) does not change. This means we are assuming that protonation and deprotonation are not occurring in the solution, even though it does to a small extent (for instance, CH3COOH protonates in a solution for about 1% of its molecules, but we are assuming this does not occur in our buffers to simplify the calculation).

805070989
Posts: 18
Joined: Fri Jun 23, 2017 11:39 am

Re: Icebox for Buffers?

Postby 805070989 » Sat Jul 29, 2017 6:05 pm

Will using an ice box work more accurately when solving a buffer solution?

Tara 1F
Posts: 21
Joined: Fri Jun 23, 2017 11:39 am

Re: Icebox for Buffers?

Postby Tara 1F » Sun Jul 30, 2017 7:35 pm

Does anyone know a good homework question where we would use an ICE BOX as i find them easier


Return to “*Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)”

Who is online

Users browsing this forum: No registered users and 1 guest