Question

5) What is the difference in the two events namely, adding NaOH to water and adding Cao to
water?​

Answer 1

Answer:

Differences : 1) Sodium Hydroxide is a strong base dissociates to form Na⁺ and OH⁻ ion. While Calcium oxide added water to form Calcium Hydroxide which further dissociates. ... 3) NaOH, CaO should be added to water gradually with constant stirring.

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Answer 2

With NaOH you are only dissolving the material, whereas CaO reacts to make Ca(OH)2 . The calcium hydroxide has a lower solubility in water than NaOH and so will precipitate out. ... Adding CaO to Water :A lot of heat (exothermic reaction) is produced in the reaction, which may even cause the water to boil.