A student heated a white coloured solid 'X' in a test tube. He observed a colourless gas evolved which turned lime water milky and a white residue ‘Y' was left in the tube.
(i) Identify X & Y
(ii) Identify the gas evolved & the chemical reaction involved in its evolution
(iii) Why did the gas turned lime water milky?
Answers
Answered by
1
Answer:
(1)X-calcium carbonate Y-calcium oxide
(2)carbon di oxide
(3)due to combination reaction
Answered by
1
Answer:
X is Calcium Carbonate
Y is Calcium Oxide
The gas evolved is carbon dioxide.
CaCO3 ----> CaO + CO2
The gas turned lime water milky because it is carbon dioxide
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