1. What is eV/mol?

eV/mol (electron volts per mole) is a unit of energy per amount of substance. It's commonly used in physics and chemistry to express energies on a per-particle basis scaled to a mole of particles.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• eV — Electron volts (unit of energy)
• mol — Moles (unit of amount of substance)

Explanation: This calculation converts the total energy into energy per mole of particles.

3. Importance of eV/mol Calculation

Details: The eV/mol unit is particularly useful in atomic physics, physical chemistry, and materials science where energies at the atomic scale need to be related to macroscopic quantities.

4. Using the Calculator

Tips: Enter energy in electron volts (eV) and amount in moles (mol). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How is eV related to other energy units?
A: 1 eV ≈ 1.602×10⁻¹⁹ joules. It's the amount of energy gained by a single electron moving across 1 volt potential difference.

Q2: What's the advantage of using eV/mol?
A: It provides a convenient scale for atomic and molecular processes while being easily relatable to macroscopic quantities through Avogadro's number.

Q3: How does this relate to kJ/mol?
A: 1 eV/mol ≈ 96.485 kJ/mol. The conversion factor is the elementary charge × Avogadro's number.

Q4: When would I need this calculation?
A: Useful when converting between particle-scale energies (eV) and molar-scale energies (kJ/mol or kcal/mol) in chemical reactions or material properties.

Q5: Can I use this for photon energies?
A: Yes, photon energies in eV can be converted to energy per mole of photons using this calculation.