Bigger Lattice Energy Calculator

Lattice Energy Comparison:

Compare LE1 and LE2 to determine which has bigger lattice energy

Comparison Result:

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1. What is Lattice Energy?

Lattice energy (LE) is the energy released when ions combine to form a crystalline lattice. It's a measure of the strength of the ionic bonds in a compound. Higher lattice energy indicates stronger ionic bonding.

2. How Lattice Energy is Calculated

The Born-Landé equation is commonly used to calculate lattice energy:

\[ U = \frac{N_A M z^+ z^- e^2}{4 \pi \epsilon_0 r_0} \left(1 - \frac{1}{n} \right) \]

Where:

\( U \) — Lattice energy
\( N_A \) — Avogadro's number
\( M \) — Madelung constant
\( z^+, z^- \) — Charges on the ions
\( e \) — Electron charge
\( \epsilon_0 \) — Permittivity of free space
\( r_0 \) — Distance between ion centers
\( n \) — Born exponent

3. Importance of Lattice Energy Comparison

Details: Comparing lattice energies helps predict relative melting points, solubility, and stability of ionic compounds. Compounds with higher lattice energy tend to be less soluble and have higher melting points.

4. Using the Calculator

Tips: Enter two lattice energy values in kJ/mol. The calculator will compare them and show which has bigger lattice energy or if they're equal.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect lattice energy?
A: Main factors are ion charge (higher charge = higher LE), ion size (smaller ions = higher LE), and ionic arrangement.

Q2: What are typical lattice energy values?
A: Values typically range from 700-4000 kJ/mol. For example: NaCl (787 kJ/mol), MgO (3795 kJ/mol).

Q3: How does lattice energy relate to solubility?
A: Higher lattice energy makes compounds less soluble as more energy is needed to break the ionic bonds.

Q4: Can this calculator be used for covalent compounds?
A: No, lattice energy specifically refers to ionic compounds. Covalent compounds have different bonding.

Q5: What's the difference between lattice energy and bond energy?
A: Lattice energy refers to ionic crystals, while bond energy refers to individual covalent bonds.