Ramu got a chemical kit contains beaker, water, quicklime. With the help of this chemical kit how Ramu will conduct exothermic reaction. What is his observation and conclusion.
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Answers
Ramu adding water to the powered quick lime
he observed temperature rises and gas through passed then beaker so it is exhothermic reaction
cao+h2o=> ca(oh)2
Adding water to powdered quicklime results in an exothermic reaction. Ramu can add the water to the quicklime he brought.
Reactions which give out heat while undergoing changes are called exothermic reactions. During these reactions, the heat flows from system to the surroundings. Thus, they have negative enthalpy change.
Quicklime has the chemical formula of CaO or Calcium Oxide. Calcium oxide reacts with water vigorously to form slaked lime or Calcium Hydroxide. Calcium hydroxide being more stable compound, it releases heat resulting in an exothermic reaction.
The chemical reaction is: CaO + H2O → Ca(OH)2