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Sumario Práctica 5: Entalpia de reacción. Calor de neutralización
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Esquema del procedimiento y la teoría y desarrollo de los cálculos y los errores.
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PRÁCTICA 5: ENTALPIA DE REACCIEN CALOR DE NEUTRALIZACISN.
HCI NaEl H AtTr = F
Ra KsImo
2W
NaOH +
-s
)
+
Bn
H2
3Ot+OH-7
H20
1. FWNDAMENTo
CALORIMEIRO de H recibirel callor que recibe calorimetro experimentaria
2O
MASA EQUIVALEMTE DE : masa que de =
al el =
cambio
,
de T
que experimenta el calorímetro
.
2. MATERIAL 3. WO S
REACTI
wast decerar con tapa cronómetro waso de precipitaslos (250 probetalasomes Hel concentra do
mL}
termómetro vidres de reloj a wasos de precipitados (50 Nasth
mz)
agitandor placce calefactora 1 mastraz aforcado (
soomi3
4, PROCEDIMIENTO
1. Disoluciones HCI Cach 500 NaOH saa 1
M1
)
ml,
456 Im
mol HC
36 9 C 414
1.
FOOML 1 mL HCK
.
+
HC.
00gHEIc.
105 disol Imol HEI 37
g
HCl O
.
mnL
'994g
2. Medida de
Meq
.
Maq CP CTEs=-
MECPH
CPHO CTeq 3+ LTeq ?]
-TIJ
1O
-T
,H20
IMC
-TE
lÖol i antoti."..Teq
l
----n5.
TeaFea Me
LEeg
met
Meq Tea
1MF
--Mc.
-T)-ME=
.
maita
.
T TF
%ee
-
LTeq-
si
)
M c
MF Meq
4-Teal
MC
+:
=
(
Teq-TF)
3. Determinacion exparimental de SHr
desprendimiento calor TOTAC
instanteinicial
!
m m
mm
Sfr - t Mleq CP LTF Ti RS
=
Lmdis
" -.)
I lat lIl -
,H2O
)
),
' reaccion
¤
rmai
t'
-
-
-
-
- MOLAR
was
:
i
-
woot
y
,
str
y Ti
Qaesprendido
=
Qdis to calor TF stire Imol
.
K
.
)
Nfkal
ERRORES
BHr = Qdist Ecalor
.
smc +
=Mc/3F
A)
DMag Lescalarl
Meq
YS 2
)
AT
+
=
+
(SMMc+
Kc HTaq
.-TF1
-2TeqtTal
SCPItnO
SMzo BIHCD
AE
2
ACASTR =
B1
t 7 +
LAFrI-(
7
)
Mip CPiMD ITF THCD
)
-Til
. -
MaCı
JLßHv
)
lßHrl
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