0
What happens when carbon dioxide gas is passed through calcium hydroxide solution?
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.
What else can I help you with?
What happens when you mix calcium hydroxide and phenolphthalein?
When you mix calcium hydroxide and phenolphthalein, the solution will turn pink or magenta in color. This color change indicates that the solution is basic, as calcium hydroxide is a strong base. Phenolphthalein is a pH indicator that changes color in the presence of bases.
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
Carbon dioxide and lime water?
CaCO3 (s) + H2O(l) CaCO3 is a white solid that appears cloudy in solution Limewater is also used in the chemical test for carbon dioxide. The chemical test is if carbon dioxide is mixed with limewater it then clouds. If this happens then the gas will be carbon dioxide.
What happens when calcium carbonate reacts with water?
When calcium carbonate reacts with water, it undergoes a chemical reaction to form calcium hydroxide (slaked lime) and releases carbon dioxide gas. This reaction is the basis for the formation of stalactites and stalagmites in caves where calcium carbonate reacts with water dripping from the ceiling.
What happens when aqueous ammonia is added to lime water?
When aqueous ammonia is added to lime water, a white precipitate of calcium hydroxide is formed as the ammonia reacts with the calcium hydroxide present in the lime water. This reaction can be represented as: Ca(OH)2 + 2NH3 → Ca(NH2)2 + 2H2O.
What happens when carbon dioxide is treated with limewater?
When carbon dioxide is treated with limewater (calcium hydroxide solution), a white precipitate of calcium carbonate forms. This is a chemical reaction that is commonly used to test for the presence of carbon dioxide gas.
What happens if calcium hydroxide is added to carbonated water?
When calcium hydroxide is added to carbonated water, it reacts with the carbonic acid in the water to form calcium carbonate, water and carbon dioxide gas. This reaction results in a white precipitate forming from the calcium carbonate, which can be seen as a cloudy appearance in the solution.
What happens to limewater in the presence of carbon?
In the presence of carbon dioxide, limewater (calcium hydroxide solution) will turn milky due to the formation of calcium carbonate as a result of a chemical reaction. This is often used as a test for the presence of carbon dioxide gas.
What happens when you mix calcium hydroxide and phenolphthalein?
When you mix calcium hydroxide and phenolphthalein, the solution will turn pink or magenta in color. This color change indicates that the solution is basic, as calcium hydroxide is a strong base. Phenolphthalein is a pH indicator that changes color in the presence of bases.
What happens when oxygen is put in to lime water?
When oxygen is added to lime water (calcium hydroxide solution), it reacts with the calcium hydroxide to form calcium carbonate. This reaction causes the lime water to turn milky due to the formation of calcium carbonate, which is insoluble and settles out of the solution as a solid.
What happens when you mix sulphuric acid with calcium hydroxide?
When you mix sulphuric acid with calcium hydroxide, a neutralization reaction occurs. Calcium sulfate and water are formed as the products of this reaction. The calcium sulfate is a white insoluble solid that precipitates out of the solution.
What can be observed when air is blown into limewater?
When air is blown into limewater, it turns milky white due to the formation of calcium carbonate. This happens because the carbon dioxide in the air reacts with the calcium hydroxide in limewater to form insoluble calcium carbonate, which gives the solution a milky appearance.
What happens when you add water in calcium hydroxide?
When water is added to calcium hydroxide, it undergoes a chemical reaction where the calcium hydroxide dissolves in the water to form a solution called calcium hydroxide solution, also known as lime water. This solution is alkaline in nature and can be used in various applications such as in agriculture, food preparation, and water treatment.
What happens when CO2 is passed through a lime water for a long time?
When carbon dioxide (CO2) is passed through lime water (a saturated solution of calcium hydroxide, Ca(OH)2) for an extended period, it reacts with the calcium hydroxide to form calcium carbonate (CaCO3), which is a white precipitate. Initially, the lime water turns milky due to the formation of this precipitate. Over time, if excess CO2 is introduced, the precipitate can dissolve back into the solution, forming calcium bicarbonate, which is soluble in water.
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 calcium oxide dissolves in water?
When calcium oxide dissolves in water, it forms calcium hydroxide. This process releases a large amount of heat, making it an exothermic reaction. Calcium hydroxide solution is alkaline in nature and can be used in various applications such as in the production of cement and in agriculture as a soil amendment.
Carbon dioxide and lime water?
CaCO3 (s) + H2O(l) CaCO3 is a white solid that appears cloudy in solution Limewater is also used in the chemical test for carbon dioxide. The chemical test is if carbon dioxide is mixed with limewater it then clouds. If this happens then the gas will be carbon dioxide.
