Home » Ask & Discuss » Chemistry. » Physical Chemistry « Back to Discussion

Physical Chemistry

Cool goIITian

Joined:	9 Sep 2007
Post:	39

3 Mar 2008 21:58:01 IST

0 People liked this

596

TOUGH QUESTION

None

CONC.OF NH^4OH AND NH^4CL IN ASOLUTION IS 0.1M EACH.CALCULATE CONCENTRATION OF HYDROGEN AND HYDROXYL IONS IF THE DISSOCIATION CONSTANT OF NH^4OH IS 7.2*10^ -10.

Share this article on:

Comments (4)

dibyasingh jagaddev

Cool goIITian

Joined: 19 Aug 2007

Posts: 50

4 Mar 2008 12:45:18 IST

Like 1 people liked this

tough question i think some data is missing

rockey

Scorching goIITian

Joined: 31 Oct 2007

Posts: 227

4 Mar 2008 13:07:44 IST

Like 1 people liked this

treat it as buffer and solve,
the eq. is ph =pka + log(salt/base)

( ) represents conc.

hope its clear

dev_22oct

Forum Expert

Joined: 27 Feb 2008

Posts: 426

4 Mar 2008 15:54:46 IST

Like 1 people liked this

the given buffer is basic for which the henderson equation is applied

pOH = -logk_b + log[salt]/[base]

pOH=-log7.2x10^-10 +log 1

that w'll give u pOH frm which u can calculate [OH]^-by using pOH=-log[OH]^-

pH=14 -pOH

n from pH u can calculate [H]⁺

DIBYA JAGADDEV

Cool goIITian

Joined: 9 Sep 2007

Posts: 39

5 Mar 2008 22:03:57 IST

Like 0 people liked this

sir could you solve it .i want to know the exact answer

Quick Reply

Reply

	Some HTML allowed.
	Keep your comments above the belt or risk having them deleted.
	Signup for a avatar to have your pictures show up by your comment
	If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team