Procedure
Diagram :
Take on
Dropper
Procedure :
(1) Take about 10 g of quick lime (Cao) in a clean china
dish. Place the china dish on an asbestos sheet.
(2) Take some water in a beaker. With the help of a dropper
add a few drops of water on quick lime in the dish.
Record your observations.
Chima dish
121 Hold the text
holder
lowe Dame
(3) Note the
evolve
Action of water on quick line
Observation table :
(4) Cont
Experimental procedure
Observation
(5) P
1. Water is added to quick lime.
Ob
2. The noise produced in the reaction.
3. The heat is absorbed or evolved
during the reaction.
4. A gas or vapour is formed during
the reaction.
5. The change in the physical state.
Heat
+
Answers
Answer:
Combination reactions are reactions that result in the formation of a single product from the reaction of two or more reactants. They are also referred to as synthesis reactions. Because bonds are formed during combination reactions, the vast majority of combination reactions are exothermic.
The reaction of quicklime with water is as follows: Calcium oxide (CaO) is also known as quicklime, and it combines with Water (H2O) to form Calcium hydroxide [Ca(OH)2]. This reaction is extremely hot and produces a lot of heat.
This is known as slaking of lime. Because of its exothermic nature, the china dish heats up during the reaction. A hissing sound is produced by the increased heat in the china dish.
The reaction's chemical formula is: (Calcium (Water) (Calcium hydroxide) (oxide)
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