Look at Figure 4.1 and answer the following questions(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

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(a) The changes observed in B is that Calcium Hydroxide solution would become milky.

(b) Reaction in Tube A:
$CH_3COOH+NaHCO_3 → CH_3COONa + CO_2 + H_2O$
Reaction in tube B
$Ca(OH)_2 + CO_2 → CaCO_3 + H_2O$

(c) If ethanol is replaced with ethanoic acid, the same change will not be observed as Ethanol will not react with Sodium Hydrogen carbonate.

(d) A solution of lime water can be prepared in the laboratory by taking distilled water in a beaker and mixing Calcium carbonate powder to it, thoroughly. Allow the solution to settle and decant the clear solution to obtain the lime water.
Updated on 10-Oct-2022 13:29:14