Entropy Change Variable Specific Heat Calculator

✖Standard molar entropy at point 2 is the entropy of 1 mole of a substance at a standard temperature of 298 K.ⓘ Standard molar entropy at point 2 [s2^°]			+10% -10%
✖Standard molar entropy at point 1 is the entropy of 1 mole of a substance at a standard temperature of 298 K.ⓘ Standard molar entropy at point 1 [s1^°]			+10% -10%
✖Pressure 2 is the pressure at give point 2.ⓘ Pressure 2 [P₂]			+10% -10%
✖Pressure 1 is the pressure at give point 1.ⓘ Pressure 1 [P₁]			+10% -10%

✖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 [δs]

⎘ Copy

👎

Formula

✖

Entropy Change Variable Specific Heat

Formula

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

Example

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

Calculator

LaTeX

Reset

👍

Download Thermodynamics Formula PDF PDF Image

Entropy Change Variable Specific Heat Solution

STEP 0: Pre-Calculation Summary

Formula Used

Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1)
δs = s2^°-s1^°-[R]*ln(P₂/P₁)
This formula uses 1 Constants, 1 Functions, 5 Variables

Constants Used

[R] - Universal gas constant Value Taken As 8.31446261815324

Functions Used

ln - The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function., ln(Number)

Variables Used

Entropy Change Variable Specific Heat - (Measured in Joule per Kilogram K) - Entropy Change Variable Specific Heat is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.
Standard molar entropy at point 2 - (Measured in Joule per Kilogram K) - Standard molar entropy at point 2 is the entropy of 1 mole of a substance at a standard temperature of 298 K.
Standard molar entropy at point 1 - (Measured in Joule per Kilogram K) - Standard molar entropy at point 1 is the entropy of 1 mole of a substance at a standard temperature of 298 K.
Pressure 2 - (Measured in Pascal) - Pressure 2 is the pressure at give point 2.
Pressure 1 - (Measured in Pascal) - Pressure 1 is the pressure at give point 1.

STEP 1: Convert Input(s) to Base Unit

Standard molar entropy at point 2: 188.8 Joule per Kilogram K --> 188.8 Joule per Kilogram K No Conversion Required
Standard molar entropy at point 1: 25.2 Joule per Kilogram K --> 25.2 Joule per Kilogram K No Conversion Required
Pressure 2: 5.2 Bar --> 520000 Pascal (Check conversion here)
Pressure 1: 2.5 Bar --> 250000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

δs = s2^°-s1^°-[R]*ln(P₂/P₁) --> 188.8-25.2-[R]*ln(520000/250000)

Evaluating ... ...

δs = 157.510754524986

STEP 3: Convert Result to Output's Unit

157.510754524986 Joule per Kilogram K --> No Conversion Required

FINAL ANSWER

157.510754524986 ≈ 157.5108 Joule per Kilogram K <-- Entropy Change Variable Specific Heat

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Mechanical » Thermodynamics » Entropy Generation » Entropy Change Variable Specific Heat

Credits

Created by Suman Ray Pramanik

Indian Institute of Technology (IIT), Kanpur

Suman Ray Pramanik has created this Calculator and 50+ more calculators!

Verified by Team Softusvista

Softusvista Office (Pune), India

Team Softusvista has verified this Calculator and 1100+ more calculators!

< Entropy Generation Calculators

Entropy Change at Constant Volume

Go Entropy Change Constant Volume = Heat Capacity Constant Volume*ln(Temperature of Surface 2/Temperature of Surface 1)+[R]*ln(Specific Volume at Point 2/Specific Volume at Point 1)

Entropy Change at Constant Pressure

Go Entropy Change Constant Pressure = Heat Capacity Constant Pressure*ln(Temperature of Surface 2/Temperature of Surface 1)-[R]*ln(Pressure 2/Pressure 1)

Entropy Change Variable Specific Heat

Go Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1)

Entropy Balance Equation

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

Entropy Change Variable Specific Heat Formula

Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1)
δs = s2^°-s1^°-[R]*ln(P₂/P₁)

What is 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. It is a state function and hence depends on the path taken by the system. Entropy is a measure of randomness.

How to Calculate Entropy Change Variable Specific Heat?

Entropy Change Variable Specific Heat calculator 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 calculate 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 calculate Entropy Change Variable Specific Heat using this online calculator? To use this online calculator 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. Here is how the Entropy Change Variable Specific Heat calculation can be explained with given input values -> 157.5108 = 188.8-25.2-[R]*ln(520000/250000).

FAQ

What is 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 and is represented as δs = s2^°-s1^°-[R]*ln(P₂/P₁) or Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1). Standard molar entropy at point 2 is the entropy of 1 mole of a substance at a standard temperature of 298 K, Standard molar entropy at point 1 is the entropy of 1 mole of a substance at a standard temperature of 298 K, Pressure 2 is the pressure at give point 2 & Pressure 1 is the pressure at give point 1.

How to calculate 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 is calculated using Entropy Change Variable Specific Heat = Standard molar entropy at point 2-Standard molar entropy at point 1-[R]*ln(Pressure 2/Pressure 1). To calculate Entropy Change Variable Specific Heat, you need Standard molar entropy at point 2 (s2^°), Standard molar entropy at point 1 (s1^°), Pressure 2 (P₂) & Pressure 1 (P₁). With our tool, you need to enter the respective value for Standard molar entropy at point 2, Standard molar entropy at point 1, Pressure 2 & Pressure 1 and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Entropy Change Variable Specific Heat?

In this formula, Entropy Change Variable Specific Heat uses Standard molar entropy at point 2, Standard molar entropy at point 1, Pressure 2 & Pressure 1. We can use 1 other way(s) to calculate the same, which is/are as follows -

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

Home

FREE PDFs

🔍 Search