Question

Assertion (A): Reaction between quicklime and water to form slaked lime is characterized by increase

in temperature. Reason (R): Increase in temperature indicates that the chemical reaction is taking place​

Answer 1

Answer:

both A and R are true but R is not the correct explaination of A

Explanation:

• yes, the reaction between quicklime or calcium oxide( CaO) and water releases energy or heat making it exothermic.
• it then forms slaked lime or Ca(OH)2

Answer 2

A is correct but R is not correct

• Quicklime and water reacting produces a greater amount of energy, making it an exothermic reaction.
• An exothermic reaction occurs when slaked lime and water are combined. A lot of heat energy is released during this reaction. Water must be added to slaked lime in order for this reaction to occur; it cannot be done in the other direction since slaked lime does not dissolve in water.
• The average reaction rate of the reactant molecules increases as the temperature rises. The number of molecules that are able to react quickly rises as more molecules move more quickly, hastening the creation of products.
• So, it may be claimed that the chemical reaction that occurs when quicklime and water combine to generate slacked lime is exothermic, characterised by a rise in temperature.
• Lime slaking is an illustration of both a combination reaction and an exothermic reaction.

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