During a constant-pressure process, the system releases heat to the surroundings. does the enthalpy of the system increase or de
1 answer:
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This problem is asking for the equilibrium constant at two different temperatures by describing the chemical equilibrium between gaseous nitrogen, oxygen and nitrogen monoxide at 25 °C and 1496 °C as the room temperature and the typical temperature inside the cylinders of a car's engine respectively:
N₂(g) + O₂(g) ⇄ 2 NO(g)
Thus, the calculated equilibrium constants turned out to be 6.19x10⁻³¹ and 9.87x10⁻⁵ at the aforementioned temperatures, respectively, according to the following work:
There is a relationship between the Gibbs free energy, enthalpy and entropy of the reaction, which leads to the equilibrium constant as shown below:
Which means we can calculate the enthalpy and entropy of reaction and subsequently the Gibbs free energy and equilibrium constant. In such a way, we calculate these two as follows, according to the enthalpies of formation and standard entropies of N₂(g), O₂(g) and NO(g) since these are assumed constant along the temperature range:
Then, we calculate the Gibbs free energy of reaction at both 25 °C and 1496 °C:
And finally, the equilibrium constants derived from the general Gibbs equation and Gibbs free energies of reaction:
Learn more:
- (Gibbs free energy) brainly.com/question/15213613
Answer:
<span>A hexagon with nothing drawn inside it does not represent Benzene.
Explanation:
Below attached picture contains structures mentioned in given option.
Structure of Option-A is shown in Red Color.
</span>
Structure of Option-B is shown in Blue Color.
Structure of Option-C is shown in Green Color.
Structure of Option-D is shown in Orange Color.
Result:
Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.
<span>A hexagon with nothing drawn inside it does not represent Benzene.
Explanation:
Below attached picture contains structures mentioned in given option.
Structure of Option-A is shown in Red Color.
</span>
Structure of Option-B is shown in Blue Color.
Structure of Option-C is shown in Green Color.
Structure of Option-D is shown in Orange Color.
Result:
Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.