0
CO2 reacts with lime water Ca(OH)2 to give CaCO3 which is milky. But on continuously passing through gaseous CO2 the soluble Ca(HCO3)2 is formed. Thus, the solution turns from milky to clear, colourless.
Ca2+(aq) + 2 OH-(aq) + CO2,gas --> CaCO3,precip. + H2O
On further addition of carbon dioxide it clears up again:
CaCO3,precip. + H2O(l) + CO2,gas --> Ca2+(aq) + 2HCO3-(aq) ,
which both are soluble ions.
What else can I help you with?
Carbon dioxide is passed into a solution of bromthymol blue indicator until the acid solution turns yellow A sprig of elodea is placed into yellow solution and it turns blue purpose of experiment is?
The purpose of the experiment is to demonstrate the process of photosynthesis. When the elodea plant is added to the yellow solution (indicating acidity), it will consume carbon dioxide and release oxygen through photosynthesis. This will cause a color change in the solution from yellow to blue as the pH increases due to the removal of carbon dioxide.
What gas that passed through into an acidic dichromate solution and turn the solution from orange to green?
Sulfur dioxide gas passed through an acidic dichromate solution turns the solution from orange to green.
What is observed when ethene is passed through bromine solution in carbon tetrachloride?
When ethene is passed through bromine solution in carbon tetrachloride, the initially red-brown color of the bromine solution decolorizes due to the addition of bromine across the carbon-carbon double bond in ethene, forming a colorless 1,2-dibromoethane product.
What is the purpose of limewater in an experiment?
Limewater is used in experiments to detect the presence of carbon dioxide gas. When carbon dioxide is passed through limewater, it causes a chemical reaction that results in the limewater turning from clear to milky white, indicating the presence of carbon dioxide. This property makes limewater a valuable tool for testing the presence of carbon dioxide in various experiments and processes.
When do lime water turns chalky?
When carbon dioxide is passed through lime water, it forms calcium carbonate, which makes the solution turn chalky or cloudy. This reaction occurs as the carbon dioxide reacts with the calcium hydroxide in the lime water to form the insoluble calcium carbonate precipitate.
Will the carbon dioxide turn colourless solution when the carbon dioxide is passed continuously into limewater?
yes it will.... anyone know why ??? :) no
What happen when carbon dioxide is passed to a solution of calcium oxide?
Calcium carbonate (CaCO3) is obtained.
What is the gas that bubbles through limewater?
The gas that bubbles through limewater is carbon dioxide. When carbon dioxide is passed through limewater (a solution of calcium hydroxide), it forms a white precipitate of calcium carbonate, indicating the presence of the gas.
Carbon dioxide is passed into a solution of bromthymol blue indicator until the acid solution turns yellow A sprig of elodea is placed into yellow solution and it turns blue purpose of experiment is?
The purpose of the experiment is to demonstrate the process of photosynthesis. When the elodea plant is added to the yellow solution (indicating acidity), it will consume carbon dioxide and release oxygen through photosynthesis. This will cause a color change in the solution from yellow to blue as the pH increases due to the removal of carbon dioxide.
What happens when carbon dioxide is passed through NaOH solution?
2 NaOH(aq) + CO2(g) = Na2CO3(aq) + H2O(l)
What gas that passed through into an acidic dichromate solution and turn the solution from orange to green?
Sulfur dioxide gas passed through an acidic dichromate solution turns the solution from orange to green.
What metal reacts with water to give a solution which forms a white precipitate with carbon dioxide?
Calcium. It reacts with water to form a solution of calcium hydroxide which can then react with carbon dioxide to form calcium carbonate, a white precipitate. You will get similar results with strontium and barium.
What is test for carbon dioxide gas gas?
When carbon dioxide is passed through lime water it goes cloudy.
What happen when carbon di oxide passed through lime water in excess?
When carbon dioxide is passed through lime water in excess, a white precipitate of calcium carbonate is formed. This is because carbon dioxide reacts with the calcium hydroxide in lime water to form calcium carbonate, which is insoluble and appears as a solid in the solution. This reaction is used as a test for the presence of carbon dioxide gas.
What does CO2 and lime water make?
When carbon dioxide reacts with lime water (calcium hydroxide solution), it forms a white precipitate of calcium carbonate. This reaction is commonly used as a test for the presence of carbon dioxide gas.
What happens when conbon dioxide is passed through water?
When carbon dioxide is passed through lime water it will turn milky.
Why does lime water go colourless when carbon dioxide is passed through it a second time?
There are two successive reactions:Ca2+(aq) + 2OH-(aq) + CO2 --> CaCO3(solid) + H2OCaCO3(solid) + CO2 + H2O --> Ca2+(aq) + 2 HCO3-(aq)
