Sulphuric Acid and Calcium Carbonate reaction 
Author Message
 Sulphuric Acid and Calcium Carbonate reaction

Can someone help me help my son ?

Why is there no reaction between Sulphuric acid  and Calcium Carbonate
? or is there



Thu, 12 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction

There is a reaction between sulfuric acid and calcium carbonate.  Carbon
dioxide is released, some water is formed, and calcium sulfate is formed.
 There will be a great deal of heat produced also.

Rich Mateles



Thu, 12 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction

SI>Can someone help me help my son ?

SI>Why is there no reaction between Sulphuric acid  and Calcium Carbonate
SI>? or is there

There is, you get calcium sulfate and carbon di-oxide and a lot of
foaming and some heat.



Thu, 12 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction


Fri, 19 Jun 1992 00:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction

I'm an A-level student carrying out a project to determine the mechanism of
the reaction between a bromate and an iodide, specificly potassium bromate
and potassium iodide.
The process I've been instucted to carry out for this is to see how rate is
affected by bromate concentration by:

Potassium bromate+potassium iodide+hydrochloric acid+water+starch+sodium
                                                              thiosulphate

This gives a blue colour due to the formation of a tunnel clathrate between
the starch and the liberated iodine.  I also have to carry out a second
similar series of experiments to see how the concentration of the iodide
affects the rate.
So far so good.
But...  Things aren't working well, and to find out what's going wrong it'll
be helpful to know what the mechanism is before I determine it (if you
follow me).  
Unfortunately I can't find a decent book in either of my local libraries to
help, so can any kind soul out there help me?  
Much appreciation, and thanks in advance.

--

           Spangly and thing...



Thu, 12 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction


Quote:

>Subject: Bromate + iodide; mechanism?
>Date: Sun, 23 Feb 1997 19:18:57 GMT
>I'm an A-level student carrying out a project to determine the mechanism of
>the reaction between a bromate and an iodide, specificly potassium bromate
>and potassium iodide.
>The process I've been instucted to carry out for this is to see how rate is
>affected by bromate concentration by:
>Potassium bromate+potassium iodide+hydrochloric acid+water+starch+sodium
>                                                              thiosulphate
>This gives a blue colour due to the formation of a tunnel clathrate between
>the starch and the liberated iodine.  I also have to carry out a second
>similar series of experiments to see how the concentration of the iodide
>affects the rate.
>So far so good.
>But...  Things aren't working well, and to find out what's going wrong it'll
>be helpful to know what the mechanism is before I determine it (if you
>follow me).  
>Unfortunately I can't find a decent book in either of my local libraries to
>help, so can any kind soul out there help me?  
>Much appreciation, and thanks in advance.
>--

>           Spangly and thing...

KBrO3 + 6KI + 6HCl ---> 6KCl + KBr + 3I2 + 3 H2O
I2 + 2Na2S2O3 ---> 2NaI + Na2S2O6

then excess of I2 gives the blue color.

If you experience troubles, please check that the acidity in the system is not
too high, because that can cause Na2S2O3 to decompose (SO2 + S), and also not
too low, as you can see the reaction requires acidic conditions. You must have
excess of iodide in the system, because the formation of tunnel clathrate is
assisted by iodide. If you don't have enough iodide in the system, the
sensitivity of this color reaction will decrease by over 100 fold, which will
give a faulse impression of "slow" reaction.

Gang



Fri, 13 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction


Fri, 19 Jun 1992 00:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction


board.spd.louisville.edu> writes

Quote:
>SI>Can someone help me help my son ?

>SI>Why is there no reaction between Sulphuric acid  and Calcium Carbonate
>SI>? or is there

>There is, you get calcium sulfate and carbon di-oxide and a lot of
>foaming and some heat.

But the reaction will come to an abrupt end as the insoluble
Calciumsuplphate forms a barrier to further acid attack , escpecially if
the CaCo3 is in lump form
--
Clifford


Fri, 13 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction

Quote:

> SI>Why is there no reaction between Sulphuric acid  and Calcium Carbonate
> SI>? or is there
> There is, you get calcium sulfate and carbon di-oxide and a lot of
> foaming and some heat.

        The reaction quickly stops though if the carbonate is not
finely powdered. The reason? A build up of insoluble calcium sulphate
on the surface of the carbonate, shielding the carbonate from further
attack.

---------
Big Frank



Tue, 17 Aug 1999 03:00:00 GMT
 Sulphuric Acid and Calcium Carbonate reaction

Quote:

>Can someone help me help my son ?

>Why is there no reaction between Sulphuric acid  and Calcium Carbonate
>? or is there

  There certainly is.  H2SO4 + CaCO3 --> H2O + CO2 + CaSO4.
  Also known as acid rain + marble, and is why so many statues are having a
rough time of it.

Stephen McNeil                             Surf's up, space ponies!  I'M
Evil Midnight Chemist                      MAKING GRAVY WITHOUT THE LUMPS!



Wed, 18 Aug 1999 03:00:00 GMT
 
 [ 10 post ] 

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