In: Chemistry
Which of the following are exothermic reactions and which are endothermic?
(a) The explosion of dynamite is:
exothermic
or
endothermic
(b) The dissociation of calcium chloride in water
is:
exothermic
or
endorthermic
(a) In explosion of dynamite energy is given off in the form of heat and light . Since energy is released it is an EXOTHERMIC reaction.
(b) The Dissociation of Calcium chloride will be an ENDOTHERMIC reaction, as it takes energy to break the lattice structure.
Note:- Only dissociation of Calcium chloride is ENDOTHERMIC, as they dissociates they form bonding with water molecules which is an EXOTHERMIC reaction. Overall reaction is EXOTHERMIC as energy is overall released.