Question

40. For a reaction, CaCO3(5)
-> CaO + CO2(g)
A,H°(CaO) = - 635.1 kg mol"},
A,H°(CO2) = -393.5 k) mol-' and
AH(CaCO3) = -1206.9 kJ mol!
Which of the following is a correct statement?
(a) A large amount of heat is evolved during the
decomposition of CaCO3.
(b) Decomposition of Caco, is an endothermic
process and heat is provided for decomposition.
(c) The amount of heat evolved cannot be
calculated from the data provided.
(d) AH = LAH" (reactants) - AH° (products)​

Answer 1

Answer:

(b) is the correct answer.

Explanation:

Since, decomposition reactions are endothermic,we need to provide a large amount of heat for the above reaction.