A pinch of baking soda is added to vinegar in a test tube. A hissing sound is hard and bubbles of gas are observed. this this gas is passed though freshly prepared live water.
(1) what is lime water?
(2) what what happened to the lime water when gas is passed through it?
(3) write write all the reaction involved?
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Explanation:
(i) Lime water is calcium hydroxide solution.
(ii) When the gas evolved is passed through lime water, then lime water turns milky.
(iii) The turning of lime water milky shows the presence of carbon dioxide because when CO2 is passed through lime water, white solid substance 'calcium carbonate' is formed which makes lime water milky.
(iv)
A. Vinegar(Acetic acid) + Baking soda(Sodium hydrogen carbonate) Carbon dioxide + sodium acetate + Water (H2O)
b. Carbon dioxide (CO2) + Lime water [Ca(OH)2] Calcium Carbonate (CaCO3) + Water (H2O)
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