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Heat of Hydration Calculator

Formula

The formula to calculate the heat of hydration is:

$H_{hyd} = H_s - H_{le}$

Where:

$H_{hyd}$ is the heat of hydration (kJ/mol)
$H_s$ is the heat of solution (kJ/mol)
$H_{le}$ is the heat of lattice energy (kJ/mol)

What is Heat of Hydration?

A heat of hydration is a measure of the energy absorbed when one mole of a substance is hydrated. It is an important concept in chemistry, particularly in the study of solutions and solvation processes.

Example Calculations

Example 1:

Heat of Solution (Hs): 100 kJ/mol
Heat of Lattice Energy (Hle): 50 kJ/mol

Using the formula:

$H_{hyd} = 100 - 50 = 50 \text{ kJ/mol}$

Example 2:

Heat of Solution (Hs): 200 kJ/mol
Heat of Lattice Energy (Hle): 80 kJ/mol

Using the formula:

$H_{hyd} = 200 - 80 = 120 \text{ kJ/mol}$