A student dropped few pieces of marble (Calcium
Carbonate) in dilute Hydrochloric acid contained in a test
tube. The evolved gas was then passed through lime water.
What change would be observed in lime water?
What will happen if excess of gas is passed through lime
water? With the help of balanced chemical equation for all
the changes explain the observation.
Answers
Answered by
1
Answer:
When a few pieces of marble are dropped in hydrochloric acid, calcium chloride, water and carbon dioxide gas are formed. The evolved gas (i.e., carbon dioxide) turns lime water milky.
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Answered by
0
Answer:
Explanation:
Reaction involved-
CaCO
3
+2HCl→CaCl
2
+CO
2
+H
2
O
The evolved gas is carbon dioxide which when passes through lime water turns it milky.
Ca(OH)
2
+CO
2
→H
2
O+CaCO
3
⇐ due to formation of this compounds
when excess CO
2
is passed
CaCO
3
+H
2
O+CO
2
→Ca(HCO
3
)
2
Bicarbonate is formed which again clears the solution
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