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The electronvolt (eV) to kilojoule per mole (kJ/mol) conversion is used to convert energy values between these two common units in physics and chemistry. This conversion is particularly important in fields like spectroscopy, electrochemistry, and molecular energy calculations.
The calculator uses the conversion formula:
Where:
Explanation: The conversion factor 96.485 kJ/(mol·eV) is derived from fundamental physical constants including the Avogadro constant and the elementary charge.
Details: Accurate energy unit conversion is essential for comparing results across different scientific disciplines, calculating reaction energies, and interpreting spectroscopic data where different units are commonly used.
Tips: Enter energy value in electronvolts (eV). The value must be non-negative. The calculator will automatically convert it to kilojoules per mole (kJ/mol) using the standard conversion factor.
Q1: Why is the conversion factor 96.485?
A: This value comes from the relationship: 1 eV/molecule = 96.485 kJ/mol, derived from the Avogadro constant (6.022 × 10²³ mol⁻¹) and the elementary charge (1.602 × 10⁻¹⁹ C).
Q2: When is this conversion typically used?
A: This conversion is commonly used in spectroscopy, electrochemistry, semiconductor physics, and when calculating molecular binding energies or reaction energies.
Q3: Are there other common energy conversions?
A: Yes, other common conversions include eV to calories, eV to Hartrees, and kJ/mol to kcal/mol, each with their specific conversion factors.
Q4: How precise is this conversion?
A: The conversion factor 96.485 is sufficiently precise for most scientific applications, though more precise values (96.485332) may be used in high-precision calculations.
Q5: Can this calculator handle negative energy values?
A: The calculator is designed for positive energy values. Negative energies (representing binding energies) should be converted using their absolute values.