Question

In the given scenario involving the decomposition of CaCO3, identify the correct statement about the energy required or released. Choose the appropriate option:

A) 890 kJ of energy would be released

B) -890 kJ of energy would be released

C) 890 kJ of energy would be required

D) -890 kJ of energy would be required

Answer 1

The correct statement for the decomposition of CaCO₃ is that it is an endothermic reaction and requires energy; based on the scenario provided, 177.8 kJ is absorbed, contradicting the 890 kJ mentioned in the question.

Step-by-step explanation:

In the decomposition of CaCO₃, the correct statement about the energy involved is that 890 kJ of energy would be required to be more accurate. However, the decomposition of 1 mol of calcium carbonate (CaCO₃) into 1 mol of calcium oxide (CaO) and 1 mol of carbon dioxide (CO₂) absorbs 177.8 kJ of heat, which indicates that the reaction is endothermic.

The heat absorbed is written as a reactant, signifying a positive heat of reaction, thus the correct option related to the given information is: C) 890 kJ of energy would be required. However, since the actual value given in the scenario for the decomposition of CaCO₃ is 177.8 kJ, it seems there might be a discrepancy in the figures provided. If we are to adhere strictly to the source material, the accurate answer should reflect 177.8 kJ of energy required, not 890 kJ.