Determine the value for the following reaction. N2(g) + 3H2(g) → 2NH3(g)+ 22,000 cal ΔH =
2 answers:
Answer : The value of is, -22,000 cal.
Explanation :
The given balanced chemical reaction is,
This reaction is an exothermic reaction because in this reaction the energy is released.
And as we know that when the energy is released (gives off) then the enthalpy of the reaction is negative and when the energy is absorbed (added) then the enthalpy of the reaction is positive.
As per question, the energy is released that means the enthalpy of the reaction will be negative.
Hence, the value of is, -22,000 cal.
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Answer:
To determine the enthalpy and entropy of dissolving a compound, you need to measure the Ksp at multiple temperatures. Then, plot ln(Ksp) vs. 1/T. The slope of the plotted line relates to the enthalpy (ΔH) of dissolving and the intercept of the plotted line relates to the entropy (ΔS) of dissolving.
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us use the thermodynamic definition of the Gibbs free energy and its relationship with Ksp as follows:
Thus, by combining them, we obtain:
Which is related to the general line equation:
Whereas:
It means that we answer to the blanks as follows:
To determine the enthalpy and entropy of dissolving a compound, you need to measure the Ksp at multiple temperatures. Then, plot ln(Ksp) vs. 1/T. The slope of the plotted line relates to the enthalpy (ΔH) of dissolving and the intercept of the plotted line relates to the entropy (ΔS) of dissolving.
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