Science, asked by riddhs, 1 year ago

please help me in this activity .....take some water in dish .dissolve some lime in that water.allow the mixture to settle down for some time take supernatant of water in another jar .what is the colour of water???

Answers

Answered by Friendshipbrain
1
Hey dear here is your answer

On passing CO2 through lime water ( Ca(OH)2 ), the solution gives a milky white precipitate due to the
formation of CaCO3. On passing excess CO2, Ca(HCO3) is formed which is soluble in water. Hence the milky
white ppt. slowly disappears.

Lime water is hydrous solution of Ca(OH)2

When lime water reacts with CO2, the following reaction takes place.

Ca(OH)2+CO2——-> CaCo3+H20

CaCo3 is white in color. So the solution turns white.

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