Q. 21 B4.4( 11 Votes )
Which gas is liberated when dilute hydrochloric acid reacts with sodium carbonate? How will you test for the presence of this gas?
When dilute hydrochloric acid reacts with sodium hydrogen carbonate, Carbon dioxide gas is liberated.
We recognize the presence of carbon dioxide by passing it through lime water which turns milky or a white precipitate of calcium carbonate is formed. If excessive carbon dioxide is passed through the milky lime water, the solution becomes clear after sometime.
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Two carbon compounds X and Y have the molecular formula C4H8 and C5H12 respectively. Which one of these is most likely to show addition reaction? Justify your answer. Also, give the chemical equation to explain the process of addition reaction in this case.
Complete the following chemical equations:
i. CH3COOC2H5 + NaOH →
ii. CH3COOH + NaOH →
iii. C2H5OH+CH3COOHXam idea - Science
(a) What are X, Y and Z?
(b) Write equations for the reactions which take place:
(i) when limestone reacts with dilute HCl
(ii) when gas X reacts with lime water to form white precipitate Y
(iii) when excess of gas X dissolves white precipitate Y to form a soluble compound ZLakhmir Singh & Manjit Kaur - Chemistry