Explanation: A thermochemical equation is a balanced chemical equation which require an enthalpy change.
A balanced equation is the equation in which number of atoms on reactant side is same as the number of atoms on product side.
A thermochemical equation for is:
Here, heat is released in the reaction hence, it is a type of exothermic reaction.
A thermochemical equation for is:
Here, heat is absorbed in the reaction hence,it is a type of endothermic reaction.
Answer : The equilibrium constant for this reaction is,
Explanation :
The given main chemical reaction is:
;
The intermediate reactions are:
(1) ;
(2) ;
We are reversing reaction 1 and multiplying reaction 2 by 2 and then adding both reaction, we get:
(1) ;
(2) ;
Thus, the equilibrium constant for this reaction will be:
Thus, the equilibrium constant for this reaction is,
Answer:
Complete combustion
Explanation:
Let's consider the reaction that occurs when methane reacts with oxygen to produce carbon dioxide and water vapor.
CH₄ + O₂ → CO₂ + H₂O
The reaction between an organic compound with oxygen to form carbon dioxide and water vapor is known as complete combustion. If instead of carbon dioxide, the product were carbon monoxide or carbon, the combustion would be incomplete.
The answer to this question would be A. Energy is released.
When a chemical bond is a form, the bond will either suck up energy or produce energy. So, to be precise the energy is not always released but also can be absorbed. In this case, the energy released number will be a minus.
Options B and C is definitely wrong since the bond is formed by an electron, it won't affects neutron/proton.
Option D might be true since the product is made of 2 or more atoms then it would seem larger. But the size of the actual atom won't be increased.