Volumetric calculations and titrations

Other pages in this set

Page 2

Extracted text:

A. Performing a titration
1. Apparatus required to make standard solutions.

Extracted text:

Cal
cul
ati
ng
the
concent
rat
ion
of
eit
her
an
aci
d or
al
kal
i.
Thi
s onl
y wor
ks
if
t
he
concent
rat
ion
of
one
(ei
ther
t
h e
aci
d
or
alkal
i)
i
s accur
atel
y known.
The
concentr
ati
on
of
the
other
can
be
worked
out
by a
simple
vol
u metr
ic
calcul
ati
on (
see
next
sect
ion
on
vol
ume t
ri
c cal
cul
ati
ons)
.

Page 5

Extracted text:

Wha t
i
s t
he conc ent
rat
ion
of
3.
6 5
g of
HCl in
1000
cm3 of
sol
uti
on?
Concentration = mol dm3
4 What i
s t
he concent
rat
ion
3
of
1
g of
N aO H i
n 250
cm
of
sol
uti
on?
Concentration = mol dm3
5 Wh a t
i
s t
he conc ent
rat
ion
o f
1.

Page 6

Extracted text:

Wh a t
i
s t
he conc entr
ati
on
o f
1.
5 8
g of
KMn O4 i
n 250
c m3 of
sol
uti
on?
Concentration = mol dm3
8 Wh a t
i
s t
he conc ent
rat
ion
o f
5.
8 5
g of
NaC l
in
500
c m3 of
sol
uti
on?
Concentration = mol dm3
9 Wh a t
i
s t
he conc ent
rat
ion
o f
14.

Page 7

Extracted text:

Wh at i
s t
he concentr
ati
on
0 o f
25
g of
N aBr
in
100 cm3
o f
sol
uti
on?
Concentration = mol dm3
2. Calculating the mass of a solid dissolved in a solution of known volume and known
concentration.
1 Wh at
ma ss
of
s odi
um T he
numb e r
of
moles
of Mass of
0.

Extracted text:

Wh at
ma s
s of
hydrogen
chl
ori
d e,
HCl,
i
s neede d
to
make 25 cm3 o f
hydr
o c hl
ori
c aci
d sol
ution
of
a
co ncent
rat
ion
o f
1 mol
dm3?
Mass of = g
4 Wh at
ma ss
o f
hyd r
ogen
chl
oride,
HC l
,
is
neede d t
o
3
make
50 cm o f
hydrochl
oric a ci
d
solut
ion
of
a concen t
r

Extracted text:

Mass of = g
6 Wh at
mass
of
sodium
hydroxi
de, N aOH ,
i
s
needed t
o ma ke25 cm3 o
f
sodi
u m hyd r
o xi
de
so l
uti
o n
of
a concen t
rati
on of
1.