Question

Quick lime is taken in a Beaker and water is added slowly to it.
(i) Will there be any change in temperature of the contents 7 Explain.
(ii) Name and define the type of reaction taking place.
(iii) Write chemical equation for the above reaction


CBSE Class X Science SA 2 (3 Marks)

Answer 1

(i) Yes, temperature rises as the beaker gets hot. This is because large amount of heat is released as the reaction is exothermic.               

(iii) Combination reaction : Reaction in which a single product is obtained from two or more

reactants.                                                                                                                                                                                                   

(h) Ca° + 1120 —■ C.a(011)2 + heat                                                                                                                                                     

(Quick lime)                    (Slaked lime)