Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical
1 answer:
The standard reaction free energy is the total energy change of a chemical reaction that occurs at standard conditions. The standard reaction free energy is calculated by subtracting the heat of formation from the enthalpy of formation.
standard reaction free energy = -Hf-Hf
The standard Gibbs free energy, on the other hand, is the total of the enthalpy and the entropy. The Gibbs free energy is a thermodynamic potential that depends on the enthalpy and entropy of a system. The change in the Gibbs free energy is equal to ΔG=ΔH-TΔS.
The enthalpy of formation is a measure of how much heat must be put in to break down a compound into its constituent elements. The heat of formation is an estimate of how much heat will be released when the same compound is formed from its constituent elements.
<h3>How is the standard reaction free energy calculated?</h3>The standard reaction free energy is the change in Gibbs free energy, which is the enthalpy minus the entropy. This can be calculated by using E=ΔH-TΔS. The ΔG for a reaction with a standard state change from
atm to
K (the most common atmospheric pressure and temperature), and 1 mol of reactants is equal to 0. The ΔG
for a reaction with standard state changes from 1 atm to 298 K and from
to
atm are equal to
.
The standard reaction free energy can be calculated by using the following equation:
E=ΔH-TΔS, where E is the standard free energy of the reaction.
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Answer:
X = 2.882×10⁵ N,
Y = 1.43×10⁴ N
Explanation:
From the diagram attached,
Let the reaction from the two support be X and Y.
According to the condition of equilibrium
Sum of upward force = sum of downward force.
X+Y = 5.25×10⁴+2.5×10⁵
X+Y = 3.025×10⁵.............................. Equation 1
Also,
Sum of clockwise moment = sum of anticlockwise moment.
Take the moment about support A
(10.2×5.25×10⁴)+(18.25×2.56×10⁵) = 36.5×Y
52.075×10⁴ = 36.5Y
Y =52.075×10⁴/36.5
Y = 1.43×10⁴ N.
Substituting the value of Y into equation 1
X+ 1.43×10⁴ = 3.025×10⁵
X = 3.025×10⁵-1.43×10⁴
X = 2.882×10⁵ N.
Hence the force provided by each supports are
X = 2.882×10⁵ N, and Y = 1.43×10⁴ N
It is given that that initial volume of gas is 20 cubic inches.
The initial pressure is given as 5 psi.
The final pressure is given as 10 psi
We are asked to calculate the final volume.
Let initial and final volume of gas is denoted as
Let the initial and final pressure of gas is denoted as
As per the question the temperature of a gas is constant.
From Boyle's law we know that pressure of a given mass of a gas is inversely proportional to the applied volume at constant temperature.
Hence mathematically
Putting the values of these respective quantities as mentioned above we get-
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