Science, asked by manishsingh223, 9 months ago

which gas is being produced during reaction in test tube how does this gas react the with calcium hydroxide lime water

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Answered by Anonymous

Limewater reacts with carbon dioxide (CO2) in a two step process. Limewater is calcium hydroxide dissolved in water. So the milky appearance goes away as the insoluble CaCO3 reacts forming the soluble Ca(HCO3)2. The magic is explained.

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Answered by Anonymous

Carbon dioxide gas is being produced during reaction in test tube.

• Given chemical compounds are diluted hcl (which is acidic) and sodium carbonate (which is basic).

• So,when they react with each other by a neutralization reaction,the sodium chloride salt, water and carbon dioxide gas are produced.

Chemical equation :

HCl + Na2CO3 ---> NaCl + H2O + CO2

• The produced carbon dioxide gas reacts with the lime water or calcium hydroxide,to produce calcium carbonate and water. (The colour becomes milky white)

Chemical equation :

Ca(OH)2 + CO2 ---> CaCO3 + H2O

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