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CHEM AND BIO HELP AND TIPS HERE

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nid404:
Actually ari, it's more like logic

see consider this

A+ KMNO4

25cm3  + 26cm3
conc x      conc z
B + KMNO4

25cm3 + 13cm3
conc y     conc z   

no of moles of a KMNO4 in 13cm3= vol X con
                                     = 13z
no of moles of KMNO4 in 26cm3= 26 Xconc
                                          =26z
more no of moles in 26cm3
implies more no of moles of A 26z> 13z of B
vol of A n B are same....conc=mol/vol
therefore conc A > conc B

nid404:
If you still don't get it....ill use numericals...
lemme knw

holtadit:
Hmmmm... nice analogy.

But this is nt my real problem.

Okay heres an example.

If 50 cm3 of HCl are added to 1 g of CaO we get a temp change of +1

Now if we double the volume of acid how is the temp change affected. I know it would go down but WHY ??

Another example.

 
If 50 cm3 of HCl 1 mol/dm3 conc. are added to 1 g of CaCO3. We get a max. CO2 volume of 60 cm3

 If 50 cm3 of HCl 0.5 mol/dm3 conc. are added to 1 g of CaCO3. We get a max CO2 volume of 30 cm3 BUT WHY ???

nid404:
I'll be back after dinner.....I'll explain the concept

holtadit:

--- Quote from: nid404 on April 09, 2010, 04:51:24 pm ---I'll be back after dinner.....I'll explain the concept

--- End quote ---

LOL even I  m having dinner now. Take your time...

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