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Why is hydrated sodium carbonate and excess hydrochloric acid boiled when reacting together?
Wiki User
∙ 13y ago
Boiling this is done to remove ALL carbon dioxide (as gas) from the solution, before titrating the HCl-excess 'back' with titrant sodium hydroxide. Otherwise CO2 is disturbing the reaction at the end point of this backtitration at pH = 7 to 8 indicated by phenolphtaleine)
Na2CO3.xH2Oaq + 2HClaq --> 2NaClaq + H2Oliq + CO2(gas) + H+aq,(excess)
(Don't forget to cool down after boiling)
OH- + H+(excess) ==> H2O
OH- + CO2 |-o-| 'nill'
(= no reaction of CO2 to form HCO3-, which is formed at pH = 7 to 8)
Wiki User
∙ 13y ago
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What chemicals do you add together to make calcium chloride?
calcium carbonate, hydrochloric acid CaCO3 + 2 HCL = CaCl2 + H2O
What is the difference between dissolving and reacting?
dissolving is when a substance dissapears and reacting is when it REACTS to what you mixed together
The two chemicals that react together in antacid tablets?
Some substance with a basic pH to counteract the pH of the acid in your stomach.
What products do you get when you mix hydrochloric acid and copper carbonate together?
Any acid will react with any carbonate to produce carbon dioxide and water. The other product is an ionic compound of the remaining ions, in this case copper chloride. (If the problem requires you to include phase labels, you also have to decide whether the ionic product will be soluble in water or not.)
What is the equation of hexane react with chloroform?
They are not reacting. but they are mixing together.
What are the products when an acid and carbonate react together?
Acid Carbon reacting
What does Calcium carbonate plus hydrochloric acid make when reacted together?
It makes calcium chloride,water and carbon dioxide
Can magnesium carbonate be made as a precipitate by reacting together magnesium sulfate and calcium carbonate?
The proposed method of making magnesium carbonate can not be accomplished from solutions in water, because the solubility of calcium carbonate in water is so low that it can not furnish a sufficient concentration of carbonate ions to exceed the solubility product constant for magnesium carbonate.
What chemicals do you add together to make calcium chloride?
calcium carbonate, hydrochloric acid CaCO3 + 2 HCL = CaCl2 + H2O
What do you call the two chemicals that react together in antacid tablets?
Calcium Hydroxide (Alkali in the stomach) and Gastric Acid (in the stomach)
What is the difference between dissolving and reacting?
dissolving is when a substance dissapears and reacting is when it REACTS to what you mixed together
What else do you need apart from oxygen to make CuCO3?
Copper and carbon along with oxygen make up copper(II) carbonate. However you cannot make it simply by mixing them together. A possible pathway might be to get to sodium carbonate perhaps CO2 + NaOH might be the way and then make some copper sulfate by reacting it with H2SO4, mix your sodium carbonate solution with copper sulfate solution and copper carbonate should precipitate out.
The two chemicals that react together in antacid tablets?
Some substance with a basic pH to counteract the pH of the acid in your stomach.
What products do you get when you mix hydrochloric acid and copper carbonate together?
Any acid will react with any carbonate to produce carbon dioxide and water. The other product is an ionic compound of the remaining ions, in this case copper chloride. (If the problem requires you to include phase labels, you also have to decide whether the ionic product will be soluble in water or not.)
What is the equation of hexane react with chloroform?
They are not reacting. but they are mixing together.
Is chloroform miscible with benzene?
Yes they are mixing together. but they are not reacting.
Is HCl a element?
No. HCl is the chemical formula for hydrochloric acid, which is a compound. H, hydrogen, is an element. Cl, chlorine, is an element. But together they are not. Together they are hydrochloric acid
