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Entropy Change Variable Specific Heat Formula

GoEntropy Balance Equation Formula

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Entropy Change Variable Specific Heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work. Check FAQs

δs = s2 ° - s1 ° - [R] \cdot \ln (\frac{P 2}{P 1})

δs - Entropy Change Variable Specific Heat?s2^° - Standard molar entropy at point 2?s1^° - Standard molar entropy at point 1?P₂ - Pressure 2?P₁ - Pressure 1?[R] - Universal gas constant?

Entropy Change Variable Specific Heat Example

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Here is how the Entropy Change Variable Specific Heat equation looks like with Values.

Here is how the Entropy Change Variable Specific Heat equation looks like with Units.

Here is how the Entropy Change Variable Specific Heat equation looks like.

157.5108 = 188.8 - 25.2 - 8.3145 \cdot \ln (\frac{5.2}{2.5})

157.5108J/kg*K = 188.8J/kg*K - 25.2J/kg*K - 8.3145 \cdot \ln (\frac{5.2Bar}{2.5Bar})

157.5108 = 188.8 - 25.2 - 8.3145 \cdot \ln (\frac{5.2}{2.5})

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Entropy Change Variable Specific Heat Solution

Follow our step by step solution on how to calculate Entropy Change Variable Specific Heat?

FIRST Step Consider the formula

δs = s2 ° - s1 ° - [R] \cdot \ln (\frac{P 2}{P 1})

Next Step Substitute values of Variables

∴

δs = 188.8J/kg*K - 25.2J/kg*K - [R] \cdot \ln (\frac{5.2Bar}{2.5Bar})

Next Step Substitute values of Constants

∴

δs = 188.8J/kg*K - 25.2J/kg*K - 8.3145 \cdot \ln (\frac{5.2Bar}{2.5Bar})

Next Step Convert Units

∴

δs = 188.8J/kg*K - 25.2J/kg*K - 8.3145 \cdot \ln (\frac{520000Pa}{250000Pa})

Next Step Prepare to Evaluate

∴

δs = 188.8 - 25.2 - 8.3145 \cdot \ln (\frac{520000}{250000})

Next Step Evaluate

∴

δs = 157.510754524986J/kg*K

LAST Step Rounding Answer

∴

δs = 157.5108J/kg*K

Entropy Change Variable Specific Heat Formula Elements

Variables

Constants

Functions

Entropy Change Variable Specific Heat

Entropy Change Variable Specific Heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.

Symbol: δs

Measurement: Specific EntropyUnit: J/kg*K

Note: Value can be positive or negative.

Formulas to find Entropy Change Variable Specific Heat

Standard molar entropy at point 2

Standard molar entropy at point 2 is the entropy of 1 mole of a substance at a standard temperature of 298 K.

Symbol: s2^°

Measurement: Specific EntropyUnit: J/kg*K

Note: Value can be positive or negative.

Formulas to find Standard molar entropy at point 2

Standard molar entropy at point 1

Standard molar entropy at point 1 is the entropy of 1 mole of a substance at a standard temperature of 298 K.

Symbol: s1^°

Measurement: Specific EntropyUnit: J/kg*K

Note: Value can be positive or negative.

Formulas to find Standard molar entropy at point 1

Pressure 2

Pressure 2 is the pressure at give point 2.

Symbol: P₂

Measurement: PressureUnit: Bar

Note: Value can be positive or negative.

Formulas to find Pressure 2

Pressure 1

Pressure 1 is the pressure at give point 1.

Symbol: P₁

Measurement: PressureUnit: Bar

Note: Value can be positive or negative.

Formulas to find Pressure 1

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

The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function.

Syntax: ln(Number)

Other Formulas to find Entropy Change Variable Specific Heat

Go Entropy Balance Equation

δs = Gsys - Gsurr + TEG

Other formulas in Entropy Generation category

Go Entropy Change at Constant Pressure

δs pres = C p \cdot \ln (\frac{T 2}{T 1}) - [R] \cdot \ln (\frac{P 2}{P 1})

Go Entropy Change at Constant Volume

δs vol = C v \cdot \ln (\frac{T 2}{T 1}) + [R] \cdot \ln (\frac{ν 2}{ν 1})

Go Entropy using Helmholtz Free Energy

S = \frac{U - A}{T}

Go Helmholtz Free Energy

A = U - T \cdot S

How to Evaluate Entropy Change Variable Specific Heat?

Entropy Change Variable Specific Heat evaluator uses Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1) to evaluate the Entropy Change Variable Specific Heat, Entropy change variable specific heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work. Entropy Change Variable Specific Heat is denoted by δs symbol.

How to evaluate Entropy Change Variable Specific Heat using this online evaluator? To use this online evaluator for Entropy Change Variable Specific Heat, enter Standard molar entropy at point 2 (s2^°), Standard molar entropy at point 1 (s1^°), Pressure 2 (P₂) & Pressure 1 (P₁) and hit the calculate button.

FAQs on Entropy Change Variable Specific Heat

What is the formula to find Entropy Change Variable Specific Heat?

The formula of Entropy Change Variable Specific Heat is expressed as Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1). Here is an example- 157.5108 = 188.8-25.2-[R]*ln(520000/250000).

How to calculate Entropy Change Variable Specific Heat?

With Standard molar entropy at point 2 (s2^°), Standard molar entropy at point 1 (s1^°), Pressure 2 (P₂) & Pressure 1 (P₁) we can find Entropy Change Variable Specific Heat using the formula - Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1). This formula also uses Universal gas constant and Natural Logarithm (ln) function(s).

What are the other ways to Calculate Entropy Change Variable Specific Heat?

Here are the different ways to Calculate Entropy Change Variable Specific Heat-

Entropy Change Variable Specific Heat=Entropy of System-Entropy of Surrounding+Total Entropy Generation

Can the Entropy Change Variable Specific Heat be negative?

Yes, the Entropy Change Variable Specific Heat, measured in Specific Entropy can be negative.

Which unit is used to measure Entropy Change Variable Specific Heat?

Entropy Change Variable Specific Heat 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 Entropy Change Variable Specific Heat can be measured.

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Entropy Change Variable Specific Heat Formula

​GoEntropy Balance Equation Formula

Entropy Change Variable Specific Heat Example

Entropy Change Variable Specific Heat Solution

Entropy Change Variable Specific Heat Formula Elements

Other Formulas to find Entropy Change Variable Specific Heat

Other formulas in Entropy Generation category

How to Evaluate Entropy Change Variable Specific Heat?

FAQs on Entropy Change Variable Specific Heat

Variable Name

GoEntropy Balance Equation Formula