Question

On prolong supply of CO2 in lime water solution, it is observed that *

1 point

Lime solution changes to gaseous state

The milkiness of limewater disappers

The color of lime water changes from white to red

The color of limewater becomes black

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Answer 1

Answer:

first one because it is gaseous state

Answer 2

Answer:

The answer is the milkiness of lime water disappears

Explanation:

When carbon dioxide gas is passed through lime water, Calcium carbonate is formed, and the water becomes milky.

        $Ca(OH)_2 +CO_2$ →    $CaCO_3 +H_2O$

    Calcium hydroxide    Calcium carbonate

When on prolonged supply of carbon dioxide through lime water, the milkiness of lime water disappears. This is due to the formation of calcium hydrogen carbonate, which is colorless and soluble in water.

       $CaCO_3 +H_2O +CO_2$   →   $Ca(HCO_3)_2$

  Calcium carbonate             Calcium hydrogen carbonate