Question

When CO2(g) reacts with H2(g) to form CO(g) and H2O(g), 41.2 kJ of energy are absorbed for each mole of CO2(g) that reacts.

Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation. Note that the answer box for the energy term is case sensitive.

Use the SMALLEST INTEGER coefficients possible and put the energy term on the appropriate side of the equation.

Answer 1

The thermochemical equation for the reaction between CO2(g) and H2(g) to form CO(g) and H2O(g) can be written as:

CO2(g) + H2(g) → CO(g) + H2O(g) + 41.2 kJ

In this equation, the reactants are CO2(g) and H2(g), while the products are CO(g) and H2O(g). The energy term of 41.2 kJ is written on the product side of the equation.

This equation indicates that for every mole of CO2(g) that reacts, 41.2 kJ of energy is absorbed. The positive sign of the energy term (+41.2 kJ) indicates that the reaction is endothermic, meaning it requires the input of energy to proceed.

It's important to note that the coefficients in the balanced equation represent the stoichiometric ratios between the reactants and products. These coefficients are not related to the energy term and are determined based on the conservation of mass.

I hope this explanation helps you understand the balanced thermochemical equation for the given reaction. Let me know if you have any further questions!