lime removal from water

Limewater turns milky when CO 2 is bubbled through it due to the formation of CaCO 3 . When more CO 2 is bubbled, the solution becomes clear due to the formation of CaHCO 3 . When the clear solution is boiled again, milkiness reappears due to the formation of CaCO 3 once aga..

In Clark's process, slaked lime, Ca(OH) 2 is added to temporary hard water. Insoluble calcium carbonate precipitate out and no longer produce hardness...

Here, limestone is burnt to produce carbon dioxide and lime. Carbon dioxide is sent to the carbonating tower, while the lime is slaked in a large quantity of water to form milk of lime. This is pumped to the middle of the ammonia recovery towe..

The lime water in D turns milky because the air given out from the seeds contains carbon dioxid..

Reaction with Slaked Lime - Chlorine reacts with slaked lime to give bleaching powder. Sprinkle some slaked lime powder into a jar of chlorine. Close the gas jar with a disc and shake it up. Soon the greenish yellow color of chlorine disappears and a off-white powder i..

The slaked lime present in the mortar combines with the carbon dioxide of the air to form a hard layered mass of calcium carbonate. When the walls are whitewashed with "milk of lime", a thick suspension of slaked lime in water, carbon dioxide of the air comb..

Removal of Temporary Hardnes..

The above solution of hydrogen peroxide is placed in a vacuum desiccator containing concentrated sulphuric acid. The water vapours are absorbed upto 90%. Finally, higher concentration is achieved by cooling the above solution till it begins to crystallize. The crystals being richer in hy..

This is the main nitrogenous compound produced due to oxidative or deamination of amino acids during protein metabolism. Ammonia is highly toxic and it is important that it is expelled out of the body as and when it is formed as it can cause severe harm to the organism. Urea In higher animals ..

Slaked Lime Ca(OH) 2 - When calcium oxide reacts with water, it liberates heat and cracks into a white powder. This white powder is calcium hydroxide or slaked lime. The process is called slaking of lime..