Catatan Popular

  • Enthalpy of Formation, ∆Hf
    • The change of heat when 1 mole of a   compound is formed from its elements at their   standard states.              H 2 (g) + ½ O 2(g) ...
  • Enthalpy of Solution, Hsoln
    The enthalpy of solution , enthalpy of dissolution , or heat of solution is the enthalpy change associated with the dissolution of a subst...
  • Enthalpy of Sublimation, Hsubl
    The heat (or enthalpy) of sublimation is the amount of energy that must be added to a solid at constant pressure in order to turn it direct...
  • Enthalpy of Combustion, ∆Hc
    • The heat released   when 1 mole of substance is burned completely in excess oxygen.     C (s) +   O 2(g)    → CO 2(g)                  ∆ ...
  • Enthalpy of Neutralization, ∆Hn
    The enthalpy of neutralization ( Δ H n o ) is the change in enthalpy that occurs when an acid and base undergo a neutralization reaction...
  • Enthalpy of Hydration, Hhyd
    • The heat change when 1 mole of gaseous ions is hydrated in water . • e.g:   Na + (g) ¾ ® Na + (aq)     D H hyd = - 406 kJ mol -1   C...
  • Born-Haber Cycle
    Ionic solids tend to be very stable compounds. The enthalpies of formation of the ionic molecules cannot alone account for this stability. ...
  • Calorimetry
    Calorimetry is the process of measuring the amount of heat released or absorbed during a chemical reaction. Calorimetry is a way of deter...
  • Enthalpy of Atomisation, Ha
    • The heat change when 1 mole of gaseous atoms is formed from its element      • D H a is always positive because it involves only breakin...
  • thermochemistry
    Thermochemistry is the study of the energy and heat associated with chemical reactions and/or physical transformations. A reaction may r...

picture of alchemies


Max Born

Max Born (1882-1970)



Born 11 December 1882(1882-12-11)
Breslau, Germany



Died 5 January 1970(1970-01-05) (aged 87)
Göttingen, Germany



Residence Göttingen, Germany

Citizenship Germany/United Kingdom

Nationality German

Fields Physics

Other academic advisors Joseph Larmor
J. J. Thomson

Other notable students Emil Wolf

Notable awards Nobel Prize in Physics (1954)



Fritz Haber



Born 9 December 1868
Breslau, Germany

Died 29 January 1934( 1934-01-29) (aged 65)
Basel,
Switzerland
Nationality German
Fields Physical chemistry

Notable awards Nobel Prize for Chemistry (1918)


Germain Henri Hess

Germain Henri Hess



Born August 7, 1802
Geneva, Switzerland



Died November 30, 1850
St. Petersburg



Nationality Russian

Fields chemistry

Known for Hess's Law






Antoine Lavoisier


calorimeter
Line engraving by Louis Jean Desire Delaistre, after a design by Julien Leopold Boilly



Born 26 August 1743(1743-08-26)
Paris, France


Died 8 May 1794(1794-05-08) (aged 50)
Paris, France


Influences Guillaume-François Rouelle



Pierre-Simon, marquis de Laplace


Pierre-Simon Laplace (1749–1827). Posthumous portrait by Madame Feytaud, 1842




Born 23 March 1749
Beaumont-en-Auge, Normandy, France

Died 5 March 1827(1827-03-05) (aged 77)
Paris, France



Nationality  France



Fields Astronomer and Mathematician


Institutions École Militaire (1769–1776)
Alma mater University of Caen



Academic advisors Jean d'Alembert
Christophe Gadbled
Pierre Le Canu
Doctoral students Siméon Denis Poisson
Known for Work in Celestial Mechanics
Laplace's equation
Laplacian
Laplace transform
Laplace distribution
Laplace's demon
Laplace expansion
Young–Laplace equation
Laplace number
Laplace limit
Laplace invariant
Laplace principle









Gustav Robert Kirchhoff



Gustav Kirchhoff



Born 12 March 1824(1824-03-12)
Königsberg, East Prussia



Died 17 October 1887(1887-10-17) (aged 63)
Berlin, Germany



Residence Germany



Nationality German


Fields Physicist


Institutions University of Berlin
University of Breslau
University of Heidelberg


Alma mater University of Königsberg


Doctoral advisor Franz Ernst Neumann


Doctoral students Max Noether
Ernst Schröder



Known for Kirchhoff's circuit laws
Kirchhoff's law of thermal radiation
Kirchhoff's laws of spectroscopy
Kirchhoff's law of thermochemistry


Notable awards Rumford medal



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