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What happens when carbon dioxide gas is passed through calcium hydroxide solution?
Wiki User
∙ 10y ago
When carbon dioxide gas is passed/bubbled through aqueous calcium hydroxide (also known as 'limewater'), a white precipitate will be formed. This means that the solution will turn cloudy/milky due to the formation of that white precipitate.
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
The precipitate, calcium carbonate, is only sparingly soluble in water. It will exist as a suspension in the resulting solution.
But when excess carbon dioxide is added, this reaction takes place instead:
CaCO3(s) + H2O(l) + CO2(g) → Ca(HCO3)2(aq)
The calcium carbonate undergoes further reaction with water and carbon dioxide to form calcium bicarbonate (or calcium hydrogen carbonate), which is soluble. Thus the precipitate appears to 'disappear' or 'dissolve'. Thus, a colourless solution is formed.
----- Other answers -----
Water is added to give calcium hydroxide, and carbon dioxide is passed through this solution to precipitate the desired calcium carbonate, referred to in the industry as precipitated calcium carbonate (PCC):
if carbon dioxide is passed through it it will turn cloudy and if it is done for to long then it will turn colourless.
Wiki User
∙ 10y ago
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What happens when you mix calcium hydroxide and phenolphthalein?
It changes colors
What happens when calcium carbonate reacts with water?
At standard temperature and pressure, calcium carbonate does not react with neutral water, but simply dissolves to a slight extent. If the water is sufficiently acidic as a result of other constituents, carbon dioxide gas can be displaced from the calcium carbonate.
What happens if you add iodine to calcium carbonate?
calcium iodide will be formed and also carbon dioxide
Mix calcium oxide with water and then what happens?
Well, The chemical reaction when calcium is placed with water is a fizzing. It fizzes and also "produces" heat. Not sure what the chemical formula would be called however. Calcium Hydroxide possibly
What happens when chlorine gas is passed through calcium hydroxide?
people become mad and restless
What happens when excess of CO2 is passed through lime vessel?
If you think to calcium hydroxide, after the reaction with carbon dioxide calcium carbonate (CaCO3) is obtained.
What happens if calcium hydroxide is added to carbonated water?
the calcium hydroxide will disolve while a bubbles appear
When you mix a few drops of phenolphthalein solution to a beaker of pure water mixed with calcium hydroxide what happens?
the colour changes to pink
What happens when you mix sulphuric acid with calcium hydroxide?
Calcium Carbonate
Is there any difference in lime water and slaked lime . If any why do you use different name?
Yes, there is a difference. Slaked lime is the term used to refer to solid calcium hydroxide, and lime water is a calcium hydroxide solution. Admittedly, two distinct terms seems like overkill, but it happens a lot... for example, "salt" and "brine" is essentially the same situation. The terms are historical, and most chemists would just say "calcium hydroxide" and "calcium hydroxide solution" instead.
What happens when sodium hydroxide solution is added to calcium carbonate and then warmed?
CaCO3(s)+2NaOH(aq)--->Ca(OH)2(aq)+Na2CO3(aq) When you heat it later, the water in the solution evaporates leaving you with just the salts. Also, it is better to say, calcium carbonate is added to sodium hydroxide solution as you add a solid to a solution not really vice versa.
What happens if you mix sodium hydrogen and calcium hydroxide as a liquid?
Sodium react with water and release hydrogen.Sodium hydroxide is also formed. Calcium hydroxide remain unchanged.
What happens when you mix calcium hydroxide and phenolphthalein?
It changes colors
What happens when sulfur dioxide reacts with calcium hydroxide?
Ca(OH)2 + H2SO4 --> CaSO4 + 2H2O Acid base neutralization reaction producing a salt and water.
What happens when vinegar reacts with seashell?
Because seashell is a salt - calcium carbonate and vinegar an acid in water solution they can react.The products are calcium acetate, water and carbon dioxide.
Explain what happens when sodium hydroxide solution is added to ammonium hydroxide?
No reaction takes place. pH of the solution increase.
What happens to calcium carbonate when heated?
It decomposes into calcium oxide and carbon dioxide
