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

Physical Chemistry

Blazing goIITian

Joined:	18 Apr 2007
Post:	1537

5 Mar 2008 08:44:52 IST

0 People liked this

375

board question........must see

None

guys do u remember the question on ammonia in our board paper..........it was given that its decomposition of ammonia and that its a zero order reaction and the rate constant was also given.........we were asked to find the rate of production of hydrogen and nitrogen.........equation was not given........so my doubt is if take 2 moles of ammonia ,we will get answer as K and 3K.........but if we divide by 2 so as to make no of moles of ammonia as 1,we get answer as 1.5 K and 2K.....please explain this guys...i hope u understood the ques.....

Share this article on:

Comments (9)

VARSHA KRISHNAN

Blazing goIITian

Joined: 5 Jun 2007

Posts: 438

5 Mar 2008 09:49:23 IST

Like 0 people liked this

d eqn is in pg 104 of ncert txtbk

VARSHA KRISHNAN

Blazing goIITian

Joined: 5 Jun 2007

Posts: 438

5 Mar 2008 09:50:50 IST

Like 0 people liked this

2 mol of ammonia ----------------------->1mol N2 + 3 mol H2
1130K,Pt catalyst

VARSHA KRISHNAN

Blazing goIITian

Joined: 5 Jun 2007

Posts: 438

5 Mar 2008 09:51:56 IST

Like 0 people liked this

rate of production of hydrogen and nitrogen will b : K and 3K

ankur khurana

Blazing goIITian

Joined: 13 Feb 2007

Posts: 1029

5 Mar 2008 11:17:21 IST

Like 0 people liked this

if equation is
NH₃ ------> 1/2 N₂ + 3/2H₂THEN RATE ARE DIFFERENT ...............????????

WHICH ANSWER IS RIGHT?

ankur khurana

Blazing goIITian

Joined: 13 Feb 2007

Posts: 1029

5 Mar 2008 11:17:45 IST

Like 1 people liked this

THEN THE ANSWER WILL BE 1/2K AND 3/2 K

ankur khurana

Blazing goIITian

Joined: 13 Feb 2007

Posts: 1029

5 Mar 2008 11:18:47 IST

Like 1 people liked this

AND WE NEED NOT GO BY THAT DAMN EQUATION.............
AS RATE OF DECOMPOSITION OF AMMONIA IS EQUAL TO RATE OF REACTION..............

Halo

Blazing goIITian

Joined: 18 Apr 2007

Posts: 1537

5 Mar 2008 11:33:42 IST

Like 0 people liked this

but man we r getting different answers if we take 1 mole of ammonia or 2...........this is actually an excercise ques........and my school has provided me a book for solutions to these excersices designed by the chennai region.........they say the answer is 1/2 K and 3/2 K.........moreover many ma friends say its the above answer.......u have any idea bout this

ankur khurana

Blazing goIITian

Joined: 13 Feb 2007

Posts: 1029

5 Mar 2008 11:37:21 IST

Like 0 people liked this

u are in kv i suppose .............even i m in kv and my region is delhi and same answer is provided in my book...........even if u r not in kv dont bother but my book says answer is same as u said and i think it is right as rate of decomposition should be equal to the rate of reaction........but there are no hard and fast rule........an ambiguos question...........noww the responsibility lays on board

Halo

Blazing goIITian

Joined: 18 Apr 2007

Posts: 1537

5 Mar 2008 11:40:43 IST

Like 0 people liked this

yaa me too in kv......so what r u concluding both answers r correct........but how can that be.....me pretty sure its the second one but dunno the reason......had u asked this to ur teacher

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