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What is observed when carbon dioxide gas is passed through limewater for a long duration?
When carbon dioxide gas is passed through limewater (a solution of calcium hydroxide) for an extended period, the solution initially turns milky due to the formation of calcium carbonate, which is a result of the reaction between carbon dioxide and calcium hydroxide. Over time, if excess carbon dioxide is introduced, the calcium carbonate can dissolve back into the solution, forming calcium bicarbonate. This process can lead to the limewater becoming clear again after the initial turbidity.
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.
What happens when excess of CO2 is passed through lime vessel?
When excess CO2 is passed through a lime vessel, it reacts with the lime (CaO) to form calcium carbonate (CaCO3) through a process called carbonation. This reaction removes the excess CO2 from the system and produces calcium carbonate as a white precipitate.
Why is calcium carbonate used to neutralize acidic water instead of calcium oxide?
Because if you over correct, excess calcium carbonate is all but harmless, whilst excess sodium hydroxide can be corrosive and toxic.
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.
One mole of calcium phosphide on reaction with excess of water gives what?
One mole of calcium phosphide on reaction with excess water produces calcium hydroxide and phosphine gas. This reaction can be represented as Ca3P2 + 6H2O → 3Ca(OH)2 + 2PH3.
What is the predicted effect on the reaction of zinc nitrate and excess sodium hydroxide?
The reaction of zinc nitrate and excess sodium hydroxide begins with precipitation of zinc hydroxide ( Zn(OH)2 ), followed by dissolvement after adding excess sodium hydroxide ( 2 OH- ) to formation of zinc aat-ions ( [Zn(OH)4]2- )
How excess acidity can be treated using calcium hydroxide?
Calcium hydroxide, Ca(OH)2 is a base and neutralizes acid. When a solution is acidic it contains excess hydrogen (H+) ions, calcium produces the hydroxide ion (OH-) in water, which reacts wit h the H+ ions to produce water. OH- + H+ --> H2O
What is milk of lime?
the milk of lime is... wait for this... the lime of milk. ================================================================== Kidding aside from the first answer, milk of lime is another common name for limewater, a saturated solution of calcium hydroxide. It got its name from the process of its preparation, wherein excess calcium hydroxide is stirred in pure water and filtering off the excess insoluble Ca(OH)2. When excess calcium hydroxide is added to limewater, a suspension of calcium hydroxide particles remains, giving it a milky aspect, in which case it has the common name of milk of lime.
What is observed when carbon dioxide gas is passed through limewater for a long duration?
When carbon dioxide gas is passed through limewater (a solution of calcium hydroxide) for an extended period, the solution initially turns milky due to the formation of calcium carbonate, which is a result of the reaction between carbon dioxide and calcium hydroxide. Over time, if excess carbon dioxide is introduced, the calcium carbonate can dissolve back into the solution, forming calcium bicarbonate. This process can lead to the limewater becoming clear again after the initial turbidity.
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.
What is known as the milk of lime?
When excess calcium hydroxide is added to limewater, a suspension of calcium hydroxide particles remains, giving it a milky aspect, in which case it has the common name of milk of lime. Milk of lime is an alkaline solution with a pH of 12.3.
Why does zinc hydroxide dissolve in excess dilute sodium hydroxide?
Zinc hydroxide dissolves in excess dilute sodium hydroxide because it forms a complex ion, [Zn(OH)4]^2-, which is soluble in aqueous solution. This complex ion helps stabilize the zinc hydroxide and prevents it from precipitating out of solution.
What elements ease an upset stomach?
Most medications include antacids, which are weak bases (e.g. calcium carbonate, aluminum hydroxide, magnesium hydroxide) to neutralize excess stomach acid.
How do you make saturated potassium hydroxide?
Gradually dissolve potassium hydroxide crystals in pure water. In a certain point, a precipitation starts as further dissolving does not take place and you've made a solution of saturated potassium hydroxide.
Why do the solution of the white precipitate of Zinc hydroxide dissolve in excess of Ammonium hydroxide?
The white precipitate of zinc hydroxide dissolves in excess ammonium hydroxide because of the formation of the complex ion [Zn(NH3)4]2+. This complex ion is soluble in water, leading to the dissolution of the precipitate. The excess ammonium hydroxide provides additional ammonia molecules to form more of the soluble complex ions, increasing the solubility of zinc hydroxide.
What happens when excess of CO2 is passed through lime vessel?
When excess CO2 is passed through a lime vessel, it reacts with the lime (CaO) to form calcium carbonate (CaCO3) through a process called carbonation. This reaction removes the excess CO2 from the system and produces calcium carbonate as a white precipitate.
