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  2. Ebullioscopic constant - Wikipedia

    en.wikipedia.org/wiki/Ebullioscopic_constant

    In thermodynamics, the ebullioscopic constant K b relates molality b to boiling point elevation. [1] It is the ratio of the latter to the former: = i is the van 't Hoff factor, the number of particles the solute splits into or forms when dissolved. b is the molality of the solution.

  3. kT (energy) - Wikipedia

    en.wikipedia.org/wiki/KT_(energy)

    kT (also written as k B T) is the product of the Boltzmann constant, k (or k B), and the temperature, T.This product is used in physics as a scale factor for energy values in molecular-scale systems (sometimes it is used as a unit of energy), as the rates and frequencies of many processes and phenomena depend not on their energy alone, but on the ratio of that energy and kT, that is, on ⁠ E ...

  4. Boltzmann constant - Wikipedia

    en.wikipedia.org/wiki/Boltzmann_constant

    The Boltzmann constant (k B or k) is the proportionality factor that relates the average relative thermal energy of particles in a gas with the thermodynamic temperature of the gas. [2] It occurs in the definitions of the kelvin (K) and the gas constant , in Planck's law of black-body radiation and Boltzmann's entropy formula , and is used in ...

  5. RICE chart - Wikipedia

    en.wikipedia.org/wiki/RICE_chart

    With specific values for C a and K a this quadratic equation can be solved for x. Assuming [4] that pH = −log 10 [H +] the pH can be calculated as pH = −log 10 x. If the degree of dissociation is quite small, C a ≫ x and the expression simplifies to = and pH = ⁠ 1 / 2 ⁠ (pK a − log C a).

  6. Van 't Hoff equation - Wikipedia

    en.wikipedia.org/wiki/Van_'t_Hoff_equation

    A major use of the integrated equation is to estimate a new equilibrium constant at a new absolute temperature assuming a constant standard enthalpy change over the temperature range. To obtain the integrated equation, it is convenient to first rewrite the Van 't Hoff equation as [2]

  7. Benesi–Hildebrand method - Wikipedia

    en.wikipedia.org/wiki/Benesi–Hildebrand_method

    This would thus allow the calculation of K −1. By plotting a graph of ε HG versus K −1, the result would be a linear relationship. When the procedure is repeated for a series of concentrations and plotted on the same graph, the lines intersect at a point giving the optimum value of ε HG and K −1.

  8. Motor constants - Wikipedia

    en.wikipedia.org/wiki/Motor_constants

    can be used for selecting the size of a motor to use in an application. K v {\displaystyle K_{\text{v}}} can be used for selecting the winding to use in the motor. Since the torque τ {\displaystyle \tau } is current I {\displaystyle I} multiplied by K T {\displaystyle K_{\text{T}}} then K M {\displaystyle K_{\text{M}}} becomes

  9. Equilibrium constant - Wikipedia

    en.wikipedia.org/wiki/Equilibrium_constant

    where log denotes a logarithm to base 10 or common logarithm, and K diss is a stepwise acid dissociation constant. For bases, the base association constant, pK b is used. For any given acid or base the two constants are related by pK a + pK b = pK w, so pK a can always be used in calculations.