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Composto - PowerPoint PPT Presentation


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Composto. Analisi qualitativa. Analisi quantitativa. Composizione percentuale. Formula minima. Modello. Formula minima (o empirica). Formula molecolare (o bruta). Formula di struttura. Formula sterica. Massa molare. C 2 H 6. CH 3. CH 3. Lewis. VSEPR, O.M. Fornace.

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Presentation Transcript
slide1

Composto

Analisi

qualitativa

Analisi

quantitativa

Composizione percentuale

Formula minima

slide2

Modello

Formula minima

(o empirica)

Formula molecolare

(o bruta)

Formula di

struttura

Formula sterica

Massa molare

C2H6

CH3

CH3

Lewis

VSEPR, O.M.

slide3

Fornace

Assorbitore di H2O

Assorbitore di CO2

O2

azoto

slide4

n =

nCr =

nK =

no =

35,35 g

38,07 g

26,58 g

m

m

m

m

=

=

=

=

=

=

0,6798 mol

2,379 mol

0,6798 mol

39,1 g mol-1

16,0 g mol-1

52,0 g mol-1

MM

MA

MA

MA

Calcolo della formula minima

Determinare la formula minima del composto costituito 26,58 % di K, 35,35 % di Cr e 38.07 % di O.

slide5

K =

Cr =

O=

0,6798

0,6798

2,379

1

1

3,5

=

=

=

0,6798

0,6798

0,6798

K2Cr2O7

KCrO3,5

slide6

% =

%Al =

27x2 x 100

MA x c

MAAlx2

=

=

15,79 %

x100

342

MM

MM

%s =

32 x 3 x 100

MASx3

=

=

28,07 %

342

MM

%o =

16 x12 x100

MAOx12

=

=

56,14 %

342

MM

Determinare la composizione percentuale del Al2(SO4)3.