If the enthalpy value for a reaction is negative, what does that indicate about the reaction? Please explain how you got your an
2 answers:
Answer: Option (D) is the correct answer.
Explanation:
When reactants absorb energy in a chemical reaction then products have more energy than the reactants. The value of is positive for an endothermic reaction.
Whereas when reactants release energy in a chemical reaction then products have less energy than the reactants. The value of is negative for an exothermic reaction.
Thus, we can conclude that if the enthalpy value for a reaction is negative, then it indicates that the reaction is exothermic and heat is released to the surroundings.
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Answer:
3)The reaction is not at equilibrium and willproceed to the right.
Explanation:
The reaction quotient of an equilibrium reaction measures relative amounts of the products and the reactants present during the course of the reaction at particular point in the time.
It is the ratio of the concentration of the products and the reactants each raised to their stoichiometric coefficients. The concentration of the liquid and the gaseous species does not change and thus is not written in the expression.
Q < Kc , reaction will proceed in forward direction.
Q > Kc , reaction will proceed in backward direction.
Q = Kc , reaction at equilibrium.
Given that:
Q =
K =
Since, Q < K , reaction is not at equilibrium and will proceed to right, in forward direction.