9. Assertion : Dissolution of quick lime in water in water is an exothermic redox reaction. Reason : During dissolution of Cao in water there is no change in the oxidation numbers of any elements. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is not correct explanation of A (c) A is correct and R is incorrect (d) A is incorrect and R is Correct
Answers
Answered by
7
Answer:
Quick lime(CaO) combines with water to form calcium hydroxide(Ca(OH)2). It is an exothermic reaction as heat is produced in the reaction.
CaO+H2O→Ca(OH)2+heat
On adding excess of calcium hydroxide in water, a saturated solution of calcium hydroxide is formed which is called lime water. Lime water is basic in nature and therefore has a pH above 7.
hope it will help you
Answered by
9
Answer:
the ans is a is not correct but b is correct
plz mark me brainlist
Similar questions