A chemical reaction with a negative enthalpy change and a negative entropy change ________. A) Must be nonspontaneous Is not pos
1 answer:
Answer:
Could be either spontaneous or nonspontaneous depending on the temperature
Explanation:
For a reaction to be spontaneous, Gibbs free energy must be negative.
The relation between enthalpy, entropy and temperature is as follows:
ΔG is change Gibbs free energy, ΔH is change in enthalpy, ΔS is change in entropy and T is temperature.
In the given condition, ΔH is negative and ΔS is negative. As ΔS is also negative then ΔG cannot be negative at all temperature (Particulary at high temperature) and thus, reaction could be nonspontaneous.
Therefore, in the given the reaction, could be either spontaneous or nonspontaneous depending on the temperature.
You might be interested in
To create the Lewis structure we need to take into account the octet rule: atoms tend to gain, lose or share electrons to complete their valence shell with 8 electrons.
C belongs to Group 4A in the periodic table so it has 4 valence electrons. It needs to share 4 pairs of electrons to complete the octet.
F belongs to Group 7A in the periodic table so it has 7 valence electrons. Each F needs to share 1 pair of electrons to complete the octet.
As a consequence, in CF₄, C will form a single bond with each F and all the octets will be complete.
