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Old Dec 19th 2017, 08:02 AM   #1
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Join Date: Dec 2017
Location: London
Posts: 5
Karsty is on a distinguished road
Acid + ????? = bubbles

Hi there,

Just joined, not a chemistry expert but have a pretty good basic knowledge of it.

I have a bit of a mystery......

Now, I was taught that acid + carbonate = salt + water + carbon dioxide. Nothing strange there, right?

So, I bought some sand, of natural origins, which on the whole appears to be quartzite, which is inert to acid, right? It is guaranteed lime-free, but I just happened to mix a bit of it with dilute sulphuric acid, and it started bubbling quite energetically.

Is there anything else that could be causing this other than calcium(or magnesium) carbonate?

Many thanks for any help here. This sand is from a very reputable source and I want to make sure it is not contaminated.

Sorry if I've posted this in the wrong forum, I don't actually know how deep this chemistry might go, I only assume as far as I know.


Last edited by Karsty; Dec 19th 2017 at 12:18 PM.
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