Is the following a properly written thermochemical equation?
2C8H18 + 25O2 → 16CO2 + 18H2O, ΔH = –5,471 kJ/mol
No, the equation does not list the enthalpy of reaction.
Yes, the equation is correct.
No, the equation does not list the states of each substance.
No, the equation is not balanced.
Properly written? Looks not so "proper" to me. Technically, it should have states of the compounds, otherwise, it is ok
The answer is "No, the equation does not list the enthalpy of reaction."
To determine whether the given equation is properly written, we need to consider a few factors.
First, the equation should list the enthalpy of reaction (ΔH) to indicate whether the reaction is exothermic or endothermic. In this case, the equation does not include the ΔH value. So, the equation is missing this important information.
Second, the equation should also list the states of each substance involved (solid, liquid, gas, aqueous) to provide a complete description of the reaction. In this case, the states are not specified.
Third, the equation should be balanced with the same number of atoms on both sides of the arrow. To check the equation's balance, we need to count the number of atoms of each element on both sides.
When we count the number of carbon (C) atoms, there are 16 on the reactant side (2C8H18) and 16 on the product side (16CO2). The same goes for hydrogen (H) atoms, with 36 on each side. However, when counting oxygen (O) atoms, there are 50 on the reactant side (25O2) and only 34 on the product side (16CO2 + 18H2O). So the equation is not balanced.
Therefore, the correct statement is "No, the equation does not list the enthalpy of reaction."