Home » Ask & Discuss » Chemistry
« Back to Discussion

Inorganic Chemistry

New kid on the Block

Joined:	3 Feb 2007
Post:	4

3 Feb 2007 18:40:10 IST

0 People liked this

909

TO PUNEET SIR

Engineering Entrance , Medical Entrance , NEET , JEE Main , AIIMS , JEE Main & Advanced , Chemistry , Inorganic Chemistry

A soln. when diluted with H₂O and boiled,it gives a white ppt.On addition of excess NH₄OH/NH₄Cl,the vol.of ppt decreases leaving behind white gelatinous ppt.Identify the ppt.which dissolves in NH₄OH/NH₄Cl.

Comments (3)

Kiran H

Forum Expert

Joined: 7 Nov 2006

Posts: 296

3 Feb 2007 18:56:42 IST

Like 1 people liked this

I think the Solution is Al(OH)₃ . Because Al⁺³ is the only basic radical in the 3rd group which gives gelatinous white ppt. This white ppt is soluble in bases like NaOH.

Cheers!

venu

New kid on the Block

Joined: 3 Feb 2007

Posts: 4

3 Feb 2007 22:04:09 IST

Like 1 people liked this

kiran thnx .but d ans is zinc hydroxide.what i guess is at first,the solution contains both zn and Al hydroxides.after by treating wid ammonium hydroxide/ammonium chloride,zn hydroxide dissolves and the vol.of ppt.decreases and Al hydroxide remains.as v know that Al hydroxide is a gelatinous ppt,the dissolved ppt shud be zn hydroxide!i thought logically.if this is wrong plz dont mind!!!

puneet

Forum Expert

Joined: 19 Oct 2006

Posts: 1966

4 Feb 2007 00:02:39 IST

Like 0 people liked this

hiiiiiii

thanx for posting the question specifically for me....

But yaar i did my inorganic chemistry 3 years back .. and in these three year i have been completely out of touch of this subject ....

I might not be able to answer it .. but u need not worry ... there will be an expert from our chemistry team of experts to answer it .. okay ..

cheers

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