Formula Used:
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The formula T = -(A/Φ) calculates the temperature of a liquid using the Helmholtz free energy (A) and Helmholtz free entropy (Φ). This thermodynamic relationship helps determine temperature from known energy and entropy values in a closed system.
The calculator uses the formula:
Where:
Explanation: The formula establishes a direct relationship between temperature, Helmholtz free energy, and Helmholtz free entropy in a thermodynamic system.
Details: Accurate temperature calculation is essential for understanding thermodynamic properties, system stability, and energy transformations in various physical and chemical processes.
Tips: Enter Helmholtz free energy in joules (J), Helmholtz free entropy in joules per kelvin (J/K). Both values must be positive and non-zero.
Q1: What is Helmholtz free energy?
A: Helmholtz free energy is a thermodynamic potential that measures the useful work obtainable from a closed thermodynamic system at constant temperature and volume.
Q2: What is Helmholtz free entropy?
A: Helmholtz free entropy is used to express the effect of electrostatic forces in an electrolyte on its thermodynamic state.
Q3: Why is there a negative sign in the formula?
A: The negative sign indicates the inverse relationship between temperature and the ratio of Helmholtz free energy to Helmholtz free entropy.
Q4: What are typical units for these measurements?
A: Helmholtz free energy is measured in joules (J), Helmholtz free entropy in joules per kelvin (J/K), and temperature in kelvin (K).
Q5: When is this formula most applicable?
A: This formula is particularly useful in thermodynamic systems where both Helmholtz free energy and Helmholtz free entropy are known or can be measured.