describe an activity to observe what happened when quicklime is added to water taken in beaker at state the observation
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Answered by
225
Materials Required: CaO(quick lime), distilled water, test tube, beaker, straw.
Procedure: 1. Take some CaO in a beaker.
2. Slowly add water to CaO taken in the beaker. Pour enough water so CaO is completely immersed.
3. Touch the beaker to note the temperature.
4. Leave it undisturbed for sometime.
5. Take small quantity of it in a test tube and blow exhaled air in it through a straw.
Observations: 1. When water is added to quick lime, a suspension of slaked lime is formed.
2.On touching the beaker, we feel the warmth.
3.A clear solution appears as the suspension of slaked lime settles down.
4. On blowing exhaled air that contains sufficient CO₂, turns lime water milky.
Procedure: 1. Take some CaO in a beaker.
2. Slowly add water to CaO taken in the beaker. Pour enough water so CaO is completely immersed.
3. Touch the beaker to note the temperature.
4. Leave it undisturbed for sometime.
5. Take small quantity of it in a test tube and blow exhaled air in it through a straw.
Observations: 1. When water is added to quick lime, a suspension of slaked lime is formed.
2.On touching the beaker, we feel the warmth.
3.A clear solution appears as the suspension of slaked lime settles down.
4. On blowing exhaled air that contains sufficient CO₂, turns lime water milky.
Answered by
65
Quick lime reacts vigorously with water to produce slaked lime releasing a huge amount of heat. ( reaction is exothermic )
CaO + H2o -> Ca(OH)2
CaO + H2o -> Ca(OH)2
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