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Why does calcium hydroxide precipitates not dissolve in excess of sodium hydroxide?
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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.
Where is excess calcium stored when blood calcium levels increase?
Excess calcium is stored in the bones when blood calcium levels increase. This process is regulated by hormones such as calcitonin and parathyroid hormone, which help maintain calcium balance in the body.
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.
When Ammonium Hydroxide excess is added to ferrous sulphate?
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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?
Excess acidity can be treated using calcium hydroxide, also known as slaked lime, by adding it to the acidic solution. The calcium hydroxide reacts with the hydrogen ions in the solution to form water and calcium ions, which reduces the acidity. This process is known as neutralization and helps to raise the pH of the solution.
What is milk of lime?
Milk of lime is a suspension of calcium hydroxide in water, also known as slaked lime. It is commonly used in various industries, such as agriculture and wastewater treatment, for its alkaline properties to neutralize acidity or precipitate impurities.
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 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.
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?
To make saturated potassium hydroxide solution, simply dissolve excess potassium hydroxide pellets in distilled water until no more pellets will dissolve, leaving some undissolved at the bottom. It is important to add the pellets slowly while stirring to prevent overheating.
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.
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 base is in antacids?
Common bases found in antacids include magnesium hydroxide, calcium carbonate, and aluminum hydroxide. These bases work by neutralizing excess stomach acid to provide relief from conditions like heartburn and indigestion.
