A manufacturing company requires 157 kJ of energy to power one of its machines for a day. The reaction shown below would be able to provide a sufficient amount of energy for this purpose.
2 HgO(s) $\rightarrow$ 2 Hg(l)+ O₂(g) $\Delta$ H = 182 kJ

Question

A manufacturing company requires 157 kJ of energy to power one of its machines for a day. The reaction shown below would be able to provide a sufficient amount of energy for this purpose.
2 HgO(s)

\rightarrow

2 Hg(l)+ O₂(g)

\Delta

H = 182 kJ

Quizplus · Accepted Answer

The given chemical reaction would release 182 kJ of energy, which is more than the required 157 kJ. Hence, it would be able to provide sufficient energy for the machine. However, the reaction given in the question is not balanced, as the number of oxygen atoms on the reactant side is 2 while on the product side it is 1. The correct balanced equation is:
2 HgO(s) → 2 Hg(l) + O2(g)
This reaction also releases 182 kJ of energy, which confirms that it can provide sufficient energy for the machine.

A Manufacturing Company Requires 157 KJ of Energy to Power →\rightarrow→

A Manufacturing Company Requires 157 KJ of Energy to Power $\rightarrow$