However, quicklime’s hydrophobic reaction with water requires a lime slaker to be used in the process. The resulting lime can also be referred to as calcium hydroxide. 5 yıl önce | 4 görüntülenme. To observe the reaction between quicklime and water, do you require the mixture to be heated? The quicklime is turned into slacklime or calcium hydroxide. We do not need to heat the mixture as it is an exothermic reaction. It created heat to cook the food inside the sealed inner pot. Quicklime and Water Reaction. The difference between Calcium oxide and Calcium hydroxide is that CaO has a heavy density (1 g/cm³) and is more reactive than hydrated lime which has the density of 0,5 g/cm 3 . The reaction is exothermic and vigorous generating enormous amount of heat. YOFKI. The product is slaked lime (calcium hydroxide). The chemical reaction between quicklime (C a O) and water is characterized by change in temperature of mixture. When water is to powdered quicklime and the resulting mixture is subsequently placed it in a kiln or an oven, and then pulverised it with water, the product formed is hydrated lime. In chemistry the word “combine” has a special meaning. Bildir. Takip et. The reaction is exothermic (heat is liberated) and a hissing sound is heard. We need to heat the mixture as it is an exothermic reaction. It is a colourless crystal or white powder, and is created when calcium oxide (called lime or quicklime) is slaked with water. The slaking of the pebble lime and powdered quick lime has to be engineered in respect to their exothermic reactions. C a O + H 2 O → C a (O H) 2 + 15000 calories (More explanation at bottom of page.) The reaction is very exotermic. The correct word is “mix”. We need to heat the mixture initially, even though it is an exothermic reaction. None of these. Quicklime, also called lime or unslaked lime, is what's inside many of today's self-heating cans too. The fact of adding water to the powdered quicklime, putting it in a kiln or oven, and then pulverizing it with water, lead to the reaction of CaO with H2O bringing the new chemical Ca(OH)2. You should not have used the word “combine” in your question. We say, for example, “chemically combined together”. What happens when we put water into calcium oxide or quicklime? Calcium oxide is more reactive than hydrated lime and is also known to have a higher density. Slaked lime is prepared by reacting calcium oxide (lime) with water, a process called slaking, and is also known as hydrated lime or slaked lime. The quick lime is generally received in pebbles of about one quarter to one eighth of an inch, or in powder form(<300µ). In the space between the two pots you could set off a chemical reaction by mixing chunks of quicklime (photo right) with water.