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Assertion :In the preparation of barium oxide by thermal decomposition of barium carbonate, carbon is added to the reaction mixture. Reason: Barium carbonate due to very high lattice energy decomposes at about 1400∘C.BaCO3→BaO+CO2 At such high temperature, the reaction tends to become reversible. Carbon added combines with CO2 forming CO and thus reaction is made irreversible CO2+C→2CO
Assertion :In the preparation of barium oxide by thermal decomposition of barium carbonate, carbon is added to the reaction mixture. Reason: Barium carbonate due to very high lattice energy decomposes at about 1400∘C.BaCO3→BaO+CO2 At such high temperature, the reaction tends to become reversible. Carbon added combines with CO2 forming CO and thus reaction is made irreversible CO2+C→2CO
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Barium carbonate due to very high lattice energy decomposes at about 1400∘C.BaCO3→BaO+CO2 At such high temperature, the reaction tends to become reversible. Carbon added combines with CO2 forming CO and thus reaction is made irreversible CO2+C→2CO
Barium carbonate due to very high lattice energy decomposes at about 1400∘C.BaCO3→BaO+CO2 At such high temperature, the reaction tends to become reversible. Carbon added combines with CO2 forming CO and thus reaction is made irreversible CO2+C→2CO
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