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Change in entropy is the thermodynamic quantity equivalent to the total difference between the entropy of a system. Check FAQs
ΔS=(2.303[R])(ΔH2.303[R]T2+log10(K2))
ΔS - Change in Entropy?ΔH - Change in Enthalpy?T2 - Final Temperature at Equilibrium?K2 - Equilibrium constant 2?[R] - Universal gas constant?[R] - Universal gas constant?

Standard Entropy Change at Final Temperature T2 Example

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With units
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Here is how the Standard Entropy Change at Final Temperature T2 equation looks like with Values.

Here is how the Standard Entropy Change at Final Temperature T2 equation looks like with Units.

Here is how the Standard Entropy Change at Final Temperature T2 equation looks like.

-21.3973Edit=(2.3038.3145)(190Edit2.3038.314540Edit+log10(0.0431Edit))
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Standard Entropy Change at Final Temperature T2 Solution

Follow our step by step solution on how to calculate Standard Entropy Change at Final Temperature T2?

FIRST Step Consider the formula
ΔS=(2.303[R])(ΔH2.303[R]T2+log10(K2))
Next Step Substitute values of Variables
ΔS=(2.303[R])(190J/kg2.303[R]40K+log10(0.0431))
Next Step Substitute values of Constants
ΔS=(2.3038.3145)(190J/kg2.3038.314540K+log10(0.0431))
Next Step Prepare to Evaluate
ΔS=(2.3038.3145)(1902.3038.314540+log10(0.0431))
Next Step Evaluate
ΔS=-21.3973124534949J/kg*K
LAST Step Rounding Answer
ΔS=-21.3973J/kg*K

Standard Entropy Change at Final Temperature T2 Formula Elements

Variables
Constants
Functions
Change in Entropy
Change in entropy is the thermodynamic quantity equivalent to the total difference between the entropy of a system.
Symbol: ΔS
Measurement: Specific EntropyUnit: J/kg*K
Note: Value can be positive or negative.
Change in Enthalpy
Change in enthalpy is the thermodynamic quantity equivalent to the total difference between the heat content of a system.
Symbol: ΔH
Measurement: Heat of Combustion (per Mass)Unit: J/kg
Note: Value can be positive or negative.
Final Temperature at Equilibrium
Final Temperature at Equilibrium is the degree or intensity of heat present at the final stage of the system during equilibrium.
Symbol: T2
Measurement: TemperatureUnit: K
Note: Value can be positive or negative.
Equilibrium constant 2
Equilibrium constant 2 is the value of its reaction quotient at chemical equilibrium, at absolute temperature T2.
Symbol: K2
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Universal gas constant
Universal gas constant is a fundamental physical constant that appears in the ideal gas law, relating the pressure, volume, and temperature of an ideal gas.
Symbol: [R]
Value: 8.31446261815324
Universal gas constant
Universal gas constant is a fundamental physical constant that appears in the ideal gas law, relating the pressure, volume, and temperature of an ideal gas.
Symbol: [R]
Value: 8.31446261815324
log10
The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function.
Syntax: log10(Number)

Other Formulas to find Change in Entropy

​Go Standard Entropy Change given Gibbs Free Energy
ΔS=ΔH-GT
​Go Standard Entropy Change at Equilibrium
ΔS=ΔH+(2.303[R]Tlog10(Kc))T
​Go Standard Entropy Change at Initial Temperature T1
ΔS=(2.303[R]log10(K1))+(ΔHT1)

Other formulas in Thermodynamics in Chemical Equilibrium category

​Go Gibbs Free Energy given Equilibrium Constant
G=-2.303[R]Tlog10(Kc)
​Go Equilibrium constant given Gibbs free energy
Kc=10-(G2.303[R]T)
​Go Temperature of Reaction given Equilibrium Constant and Gibbs Energy
T=G-2.303[R]log10(Kc)
​Go Gibbs Free Energy given Equilibrium Constant due to Pressure
G=-2.303[R]Tln(Kp)

How to Evaluate Standard Entropy Change at Final Temperature T2?

Standard Entropy Change at Final Temperature T2 evaluator uses Change in Entropy = (2.303*[R])*(Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium)+log10(Equilibrium constant 2)) to evaluate the Change in Entropy, The Standard entropy change at final temperature T2 formula is defined as the thermodynamic quantity equivalent to the total difference between the entropy of a system. Change in Entropy is denoted by ΔS symbol.

How to evaluate Standard Entropy Change at Final Temperature T2 using this online evaluator? To use this online evaluator for Standard Entropy Change at Final Temperature T2, enter Change in Enthalpy (ΔH), Final Temperature at Equilibrium (T2) & Equilibrium constant 2 (K2) and hit the calculate button.

FAQs on Standard Entropy Change at Final Temperature T2

What is the formula to find Standard Entropy Change at Final Temperature T2?
The formula of Standard Entropy Change at Final Temperature T2 is expressed as Change in Entropy = (2.303*[R])*(Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium)+log10(Equilibrium constant 2)). Here is an example- -21.397312 = (2.303*[R])*(190/(2.303*[R]*40)+log10(0.0431)).
How to calculate Standard Entropy Change at Final Temperature T2?
With Change in Enthalpy (ΔH), Final Temperature at Equilibrium (T2) & Equilibrium constant 2 (K2) we can find Standard Entropy Change at Final Temperature T2 using the formula - Change in Entropy = (2.303*[R])*(Change in Enthalpy/(2.303*[R]*Final Temperature at Equilibrium)+log10(Equilibrium constant 2)). This formula also uses Universal gas constant, Universal gas constant and Common Logarithm Function function(s).
What are the other ways to Calculate Change in Entropy?
Here are the different ways to Calculate Change in Entropy-
  • Change in Entropy=(Change in Enthalpy-Gibbs Free Energy)/TemperatureOpenImg
  • Change in Entropy=(Change in Enthalpy+(2.303*[R]*Temperature*log10(Equilibrium Constant)))/TemperatureOpenImg
  • Change in Entropy=(2.303*[R]*log10(Equilibrium constant 1))+(Change in Enthalpy/Initial Temperature at Equilibrium)OpenImg
Can the Standard Entropy Change at Final Temperature T2 be negative?
Yes, the Standard Entropy Change at Final Temperature T2, measured in Specific Entropy can be negative.
Which unit is used to measure Standard Entropy Change at Final Temperature T2?
Standard Entropy Change at Final Temperature T2 is usually measured using the Joule per Kilogram K[J/kg*K] for Specific Entropy. Calorie per Gram per Celcius[J/kg*K], Joule per Kilogram per Celcius[J/kg*K], Kilojoule per Kilogram per Celcius[J/kg*K] are the few other units in which Standard Entropy Change at Final Temperature T2 can be measured.
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