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TEMA 3 QUIMICA PER A PRIMER PARCIAL DEL PRIMER QUATRIMESTRE
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apunts per primer examen de quimica
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TEMA 3: REPRESENTACIONS 2D I 3D DE LES MOLÈCULESREPRESENTACIONS BIDIMENCIONALS
Nota: la formula empírica ens dona la proporció d’un element envers un altre. En inorgànica si
que podem simplificar i utilitzar la formula empírica però en orgànica no la utilitzem perquè no
podem simplificar, necessitem més informació.
Nota: la formula desenvolupada o de Lewis ens dona més informació que la formula molecular
però no acaba de ser del tot precisa.
Nota: els enllaços entre C-H no els dibuixem, sols els enllaços entre hidrògens i heteroàtoms (
àtoms diferents al carboni o hidrogen)
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