Delta Hf = dHf
<span>dHf rxn = (n*dHf products) - (n*dHf reactants). </span>
<span>Substitute 5113.3 kJ for dHf rxn and solve for the only unknown in the equation which is dHf C8H18.
</span>-5133.3-[(8x-393.5)+9(-241.8)] = 190.9
<span>Since it is an enthalpy of formation, the value has to be negative, </span>
<span>thus the correct answer is -190.9</span>
Hi, Again!
The answer to the drop downs are
•Increase
•Decreases
• 1:1
•5.9
Hope this helps !
Answer:
D
Explanation:
Reduction is a gain of electrons, oxidation is a loss of electrons, and electron transfer reactions are also called redox reactions.
this link might be helpful
https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Supplemental_Modules_(Analytical_Chemistry)/Electrochemistry/Redox_Chemistry/Oxidation-Reduction_Reactions
