explain the similarity and difference in a two events namely adding NaoH to water and adding CAO to water
Answers
Answered by
306
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 NaOH to Water:
NaOH + H2O = Na+ and OH- ions. The reaction will be Exothermic, where heat will be released. Sodium hydroxide is considered a strong base and as such is able to completely and fully disassociate in aqueous solution.
Adding CaO to Water :A lot of heat (exothermic reaction) is produced in the reaction, which may even cause the water to boil.
Adding NaOH to Water:
NaOH + H2O = Na+ and OH- ions. The reaction will be Exothermic, where heat will be released. Sodium hydroxide is considered a strong base and as such is able to completely and fully disassociate in aqueous solution.
Adding CaO to Water :A lot of heat (exothermic reaction) is produced in the reaction, which may even cause the water to boil.
Answered by
112
Answer:
similarity:both event are exothermic.
difference:NaOH in water
1) no chemical reaction take place.
2)an aqueous solution is formed.
adding CaO in water
1)a chemical reaction take place.
2) the following reaction take place.
CaO +H2O ->Ca(OH)2+ heat
Explanation:
heat is given away
Similar questions