Question

Why is Frehley prepared lime water used in experiment to test evolution of Co2 ?

Answer 1

Fresh lime water is a solution of Ca ( OH)2 which can react with CO2 to form insoluble CaCO3 that gives the milky appearance. Old lime water must have reacted with CO2 of the air leaving no Ca(OH)2 to react with more Co2.

Answer 2

heya !!


here is your answer⤵️⤵️


This experiment is to show the presence of Co2.


The lime water turns to white colour when Co2 is added.

To react this, Freshly lime water is used in experiment to test evolution Co2.



hope my answer helps you