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प्रश्न
A solid compound ‘A’ decomposes on heating into ‘B’ and a gas ‘C’. On passing the gas ‘C’ through water, it becomes acidic. Identify A, B, and C.
उत्तर
A – CaCO3, solid compound
‘A’ decomposes on heating into ‘B’ and a gas ‘C’.
\[\ce{\underset{\text{Calcium carbonate}}{CaCO3_{(s)}}->[\Delta]\underset{\text{(B)}}{CaO_{(s)}} + \underset{\text{(C)}}{CO2_{(g)}↑}}\]
On passing the gas CO2 through water, it becomes acidic.
\[\ce{H2O_{(l)} + CO2_{(g)}->\underset{\text{Carbonic acid Acidic}}{H2CO3_{(aq)}}}\]
A – CaCO3, Calcium carbonate
B – CaO, Calcium oxide
C – CO2, Carbondioxide gas
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