Resultant carbon dioxide passed through limewater in the right tube, producing a milky solution due to precipitation of the insoluble suspension of calcium carbonate: Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O.

The formula for lime water is Ca(OH)2 and the chemical name for lime water is calcium hydroxide.

When excess of CO2 is passed through lime water the white precipitate of CaCO3 dissolves to form calcium hydrogen carbonate.

Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.

Reactions. Carbon dioxide is an acidic oxide (a typical property of the majority of non-metal oxides) and reacts with sodium hydroxide to form a salt and water.

When carbon dioxide gas is passed through or over limewater, it turns milky due to the formation of calcium carbonate. Lime reacts with acidic gases like sulfur dioxide.

Lime water turns milky, when carbon dioxide gas is passed into it.

Carbon monoxide and sulphur trioxide usually don’t react with lime water. When carbon dioxide reacts with lime water, limestone [CaCO3] is formed which is an insoluble ppt. Due to this insoluble ppt., the solution appears milky.

Grade 10. Option D is correct as both carbon dioxide and Sulphur Dioxide do turn limewater milky.

Limewater as Indicator of Carbon Dioxide Gas. Description: Carbon dioxide gas from a cylinder is bubbled through limewater and calcium carbonate solid is formed causing the limewater to become cloudy.

– Carbon dioxide is the gas that reacts with calcium hydroxide solution, limewater, to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide as mentioned above. When carbon dioxide is bubbled through the limewater solution, the limewater turns milky or cloudy white.

The lime water is prepared by dissolving calcium hydroxide in water. This happens because the carbon dioxide reacts with the calcium hydroxide to form calcium carbonate. Calcium carbonate is insoluble in water therefore it forms a white precipitate and due to this the solution appears milky.

Freshly prepared lime water is used in the experiment to test the presence of CO2 because lime water turns milky when CO2 passes through it.

Lime water reacts with chlorine to form CaOCl2(bleaching powder).

This process is called slaking of lime and the fine powder thus obtained is called slaked lime. The reaction which takes place when quicklime is added to water is as follows: CaO+H2O→Ca(OH)2 .

Answer: When water is added to quicklime rise in temperature is observed. This is an example of an exothermic reaction.

Adding water to quicklime produces an exothermic reaction (gives out heat) and hydrated lime.

Uses: Quicklime has a wide range of uses, including in the production of iron and steel, paper and pulp production, treatment of water and flue gases and in the mining industry. For the iron and steel industry, we also supply different fractions of both reactive shaft furnace-burnt and hard-burnt rotary kiln lime.

Quicklime is calcium oxide. When it contacts water, as it often does in burial sites, it reacts with the water to make calcium hydroxide, also known as slaked lime. This corrosive material may damage the corpse, but the heat produced from this activity will kill many of the putrefying bacteria and dehydrate the body.

Quick lime is calcium oxide, CaO, in the solid state. Slaked lime is calcium hydroxide, Ca(OH)2, in the solid state. Lime water is a dilute solution of calcium hydroxide, Ca(OH)2, in water. Soda lime is a mixture of sodium hydroxide, NaOH, (also known as caustic soda) and calcium oxide, CaO, (also known as quicklime).

Garden lime is a rock powder used to raise the pH level of soils high in acidity. An application of lime “sweetens” a soil — that is, it can make a “sour” soil more alkaline.

CaO

pH 12.8

This contains citric acid, and is therefore sour in taste. On the other hand, lime water is a saturated solution of a base called calcium hydroxide (chemical formula Ca(OH)) in water. Hence, lime water is not acidic but basic in nature.

12.4

Lime weighs 3.34 gram per cubic centimeter or 3 340 kilogram per cubic meter, i.e. density of lime is equal to 3 340 kg/m³; at 20°C (68°F or 293.15K) at standard atmospheric pressure.