Notifications
Clear all
0
23/12/2021 1:39 pm
Topic starter
A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue mixed with water forms ‘Y’. On passing an excess of CO2 through ‘Y’ in water, a clear solution ‘Z’, is obtained. On boiling ‘Z’, compound ‘X’ is reformed. The compound ‘X’ is
(a) Ca(HCO3)2
(b) CaCO3
(c) Na2CO3
(d) K2CO3
1 Answer
0
23/12/2021 1:46 pm
Correct answer: (b) CaCO3
Explanation:
X \(\overset{heat}{\longrightarrow}\) CO2 + Residue
Solid ↓ H2O
boil↑
Z \(\overset{excess\;CO_2}{\longleftarrow}\) Y
The given properties coincide with CaCO3
This post was modified 3 years ago by Reyana09