Question

Three beakers labeled as a b and c each containing 25 ml of water were taken a small amount of sodium hydroxide and anhydrous copper sulfate and sodium chloride were added to beaker A B and C respectively it was observed that there was an increase in the temperature of the solution contained in beaker A and B whereas in case of C the temperature of the solution falls. Which one of the statements is correct?
I. In beaker A and B, the exothermic process had occurred.
II. In beaker A and B, the endothermic process had occurred.
III. In beaker C, the exothermic process had occurred.
IV. In beaker C, the endothermic process had occurred

Answer 1

Answer:

as we know that

the process in which heat is absorbed called endothermic and vice versa called exothermic

so in this

ans. 1 and 4