(a) What change would you observe in the calcium hydroxide solution taken in tube B?

(b) Write the reaction involved in test tubes A and B respectively.

(c) If ethanol is given instead of ethanoic acid, would you expect the same change?

(d) How can a solution of lime water be prepared in the laboratory?

(a) The solution of Calcium Hydroxide turns milky.

(b) Reactions Involved:

Test tube A – CH₃COOH+NAHCO₃ →CH₃COONA+CO₂+ H₂O

Test tube B – Ca(OH)₂+CO₂ CaCO₃+H₂O

(c) There is no change because there will be no reaction taking place in this case.

(d) Preparation of lime water solution – Take distilled water and Calcium carbonate powder in a beaker. Mix it and allow it to settle down. Finally, decant the clear solution.