Physical Chemistry

Formula5:

$begin mathsize 48px style p equals x p to the power of o end style$

p= Vapour Pressure of an Ideal Solution ; x= Mole Fraction of Solvent ; p^o=Vapour Pressure of the Pure Solvent ;

Boiling Point Elevation Coefficient Calculator

Formula5:

$begin mathsize 36px style K subscript b equals space fraction numerator M R T squared over denominator capital delta H end fraction end style$

K_b= Boiling Point Elavation Coefficient ; M = Molecular weight ; T= Boiling Point of the pure Solvent ; ΔH = Heat of Vaporization ;

Boiling Point Elevation Calculator

Formula5:

$begin mathsize 48px style K subscript b. M space equals space T subscript b space minus space T subscript 0 end style$

K_b= Boiling Point Elevation Coefficient ; M = Molarity of the solution (when solute is added) ;

T₀= Boiling Point of the pure solvent; T_f= Boiling Point of the solution

Relative Population of rotational energy states : Boltzmann Distribution Calculator

Formula5:

$begin mathsize 36px style x equals e to the power of negative fraction numerator B. h. c. J left parenthesis J plus 1 right parenthesis over denominator K subscript B T end fraction end exponent space semicolon space space bevelled N subscript j over N subscript 0 equals x space end style$

N_J= Number of molecule in J state ; N₀ = Number of molecule in the ground state ( J= 0 ) ; K_B=Bolzmann Constant ; T = Temperature ; B = Rotational Constant; h = Plank Constant ; x=Relative Population; c = Velocity of light ; J = Rotational Quantum Number

Beer -Lambert Law : Concentration, Path-length and Transmittance Calculator

Formula5:

$begin mathsize 48px style log open parentheses T close parentheses space equals space epsilon c l end style$

T= Transmittance ; ε = Molar Absorption Coefficient ; c = Concentration ; l = Path Length

Beer -Lambert Law : Concentration, Path-length and Absorbance Calculator

Formula5:

$begin mathsize 48px style A equals epsilon c l end style$

A = Absorbance ; ε = Molar absorption coefficient , Molar absorptivity or Molar extinction coefficient ; c = Concentration ; l = Path Length

Allowed rotational energy level of rigid diatomic molecule

Formula5:

$begin mathsize 36px style E subscript j equals fraction numerator h squared over denominator 8 straight pi squared straight I end fraction J left parenthesis J plus 1 right parenthesis end style$

E_j = Rotational energy Level; I= Moment of Inertia; J= Rotational quantum number ; h = Plank's constant

Intensity and Absorbance

Formula5:

$begin mathsize 36px style A equals log open parentheses I subscript o over I close parentheses space end style$

A = Absorbance ; I_o= Intensity of the incident radiation ; I = Intensity of the transmitted radiation

Boltzmann's Entropy Formula: Calculator

Formula5:

$begin mathsize 48px style S equals K subscript B ln W end style$

S=Entropy ; K_B= Bolzmann's Constant ; W = Number of microsates

Internal Energy Change at Constant Volume Calculator

Formula5:

$begin mathsize 48px style capital delta U space equals space C subscript v open parentheses T subscript 2 space minus space T subscript 1 close parentheses space end style$

ΔU= Internal Energy Change ; C_v = Heat Capacity at constant Volume ; T₂ , T₁ = Final and Initial Temperature;

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Physical Chemistry

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