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What is the equation for EDTA with calcium ions
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Topic: What is the equation for EDTA with calcium ions (Read 15307 times)
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Confused
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What is the equation for EDTA with calcium ions
«
on:
May 30, 2006, 02:27:41 AM »
How do you simply make up an equation if you're not given anything but the names?
«
Last Edit: May 30, 2006, 11:21:47 AM by Mitch
»
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Mitch
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Re: Making an equation
«
Reply #1 on:
May 30, 2006, 02:40:53 AM »
Please be more specific. How are we suppose to answer that?
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Borek
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Re: Making an equation
«
Reply #2 on:
May 30, 2006, 03:13:33 AM »
I suppose the question is about how to translate "silver nitrate reacts with sodium chloride yielding silver chloride and sodium nitrate" into
AgNO
3
+ NaCl -> AgCl + NaNO
3
Just start with writing all named compounds formulas.
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ChemBuddy
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Confused
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Re: Making an equation
«
Reply #3 on:
May 30, 2006, 03:51:12 AM »
Sorry, that was a stupid way to put it... The question just says... What is the equation for EDTA with calcium ions>
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AWK
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Re: Making an equation
«
Reply #4 on:
May 30, 2006, 04:37:14 AM »
EDTA - disodium ethylenediamine tetraacetate (Na2C10H14N2O8)
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AWK
Confused
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Re: Making an equation
«
Reply #5 on:
May 30, 2006, 07:57:44 AM »
Yep, so how do I write out the whole equation for the reaction?
It would be Na2C10H14N2O8 + CaCO3 (Or just straight Ca?) ---> (??) ... Then I dont know how to figure out the next part...
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Albert
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Re: What is the equation for EDTA with calcium ions
«
Reply #6 on:
May 30, 2006, 03:11:23 PM »
It depends on the pH in the solution. Generally, you set pH at 10. Hence, the chemical equation is:
Ca
2+
+ Y
4-
-> CaY
2-
or, put in other words,
Ca
2+
+ Na
4
N
2
(CH
2
COO)
4
-> 4Na
+
+ CaN
2
(CH
2
COO)
4
2-
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What is the equation for EDTA with calcium ions