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Calorimeter
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A calorimeter is a device used for calorimetry, or the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. Differential scanning calorimeters, isothermal
The world's first ice calorimeter, used in the winter of 1782–83, by Antoine Lavoisier and Pierre-Simon Laplace, to determine the heat involved in various chemical changes; calculations were based on Joseph Black's prior discovery of latent heat. These experiments mark the foundation of thermochemistry.
The world's first ice calorimeter, used in the winter of 1782–83, by Antoine Lavoisier and Pierre-Simon Laplace, to determine the heat involved in var
The calorimeter of Lavoisier and La Place, 1801
The calorimeter of Lavoisier and La Place, 1801
Continuous reaction calorimeter
Continuous reaction calorimeter
Enthalpy
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Enthalpy is the sum of a thermodynamic system's internal energy and the product of its pressure and volume. It is a state function in thermodynamics used in many measurements in chemical, biological,
Calorimeter
…suspended above a combustion chamber. It is one of the measurement devices used in the study of thermodynamics, chemistry, and biochemistry. To find the enthalpy change per mole of a substance A in a reaction between two substances A and B , the substances are separately added to a calorimeter and the initial…
T − s diagram of nitrogen. The red curve at the left is the melting curve. The red dome represents the two-phase region with the low-entropy side the
T − s diagram of nitrogen. The red curve at the left is the melting curve. The red dome represents the two-phase region with the low-entropy side the saturated liquid and the high-entropy side the saturated gas. The black curves give the T − s relation along isobars. The pressures are indicated in bar. The blue curves are isenthalps (curves of constant enthalpy). The values are indicated in blue in ⁠ kJ /kg⁠. The specific points a, b, etc., are treated in the main text.