Summary
Sumario Práctica 1: preparación de disoluciones, expresión de la concentración
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- Institution
Procedimiento necesario para preparar disoluciones.
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PRÁCTICA 1: PREPARACIED DE DISOLUCIONES EXPRESION DELA CONCENTRACIEMMATERIAL
Pipeta 25 ml 1 waso de precipitados (5 Varilla de vidreo
omLI
2 matraces aforaalos 1250 mull Embudo cuentagotas
2 vasos de
precipitadlos c Bureta 1 matraz aforado (100
mL)
2romL)
REACTIVOS DATES
d % 0'0005 0'5
HCI
glml Vdiso 250 I mL
=
=1190
!.
etano 0'5 J 5'2% 0' mL
r 37 %
Wcomercial
=
en mcusa
=
l
.
MMn 36'46 70'005
CuSOy glond
=
5tlzOCsJ
A BISOCULIEM ACHOSA DEAC CLWORHTDRICO O 250
.
.
'25M.
.
mL
1. Cálcolos
:
6'25 mol HCC 36'46 g HU 1809 ImL Hlece
5'2
HCC
.
250 rnt disol = mL
.
..
HClce
.
mol 3+ HEE
HEe lllEgHUcc
,,
10 alisul ^
g
.
Omk
2. En waso da
precipitados -7+
agualmitard + -3
remover
HEe
)
3. Tranguasar a matraz aforado cantes comprobar que han désolucion entai a temperatora ambierte
).
4. Enrasar homogeneizar rotular
.
,
,
B DISOLUCION ALHLOSA DE HE B 250 POR BILWGEM
.
ML.
.
'OUJM.
1. necesitamos 25 de Ca disclucion anterior 3. Transwasser c matraz aeforado
.
mL
.
4.
precipitaclos
Metdarlos con
agra en waso de
Enrasar
y homogeneizar
.
-
B ACCESA DE SULFATO BE COBRE CEUSOS Y HEe (
)
nOOm)
.DISOLEGOM
1. Cálculos
:
Imk HClc
100
O mol 441. 36'46
5 100 HClcs
=240 HClce 2'5 rosl
g
mnl -3
'3
mL.
HC1.
-
1 ml HCI ImolHC 37
g
HCI
llEgHElsc
O
1
.' mol
Cw 24968 Coson
l
2'49 215
g Coson
n
g
g
:
504.
disol
..
-3
00mL
103 ml disol I mol Cosou
.
2. Disolucion de HElc en wass
.
3. Besada CwSwh
.
4. transvasoer
Bisolveer ter malizan
.
5. Enrasar homogeneizar rotular
.
,
,
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