Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Calculate the heat produced (in kJ ) when 224gm of CaO is completely converted to CaCO 3 by reaction with CO 2 at 27 0 C in a container of fixed volume. Given : 
(CO 2 , g) = -394 kJ/mol ; [use R = 8.3 K -1 mol -1 ]
Text Solution
Verified by ExpertsThe correct answer is:
A
-702.04 kJ
CaO (s) + CO 2 (g) 
CaCO 3 (s)
r H° = 
(CaCO 3 ) - 
(CaO) - 
(CO 2 )
= -1207 -(-635) -(-394)
= -178kJ/mol
= -175.51 kJ
= -702.04 kJ
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