E_-_102_F11_Notes

Asaltbridgeconnectsthetwocellsacurrentof080aisobserved

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Unformatted text preview: (aq) + 2 e + 
 Ag (aq) + e → Ag(s) 
 Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) 
 
 A
schematic
representation
of
this
galvanic
cell
is:

 Cu|Cu2+
||
Ag+|Ag
 
 
 __________________________
occurs
at
the
anode.
 • Electrons
flow
from
the
anode
so
it
shows
a
negative
charge.
 Reduction
occurs
at
the
cathode.
 • Electrons
flow
to
the
cathode
so
it
shows
























charge.
 Salt
bridge
contains
a
salt
such
as
NaNO3
 • Permits
ions
to
diffuse
from
one
side
to
the
other
but
avoids
bulk
mixing
of
the
 solutions
(which
would
stop
the
flow
of
electrons
through
the
circuit).

 • Without
the
salt
bridge
there
would
be
an
accumulation
of
positive
charges
at
the
 anode
side
and
negative
charges
at
the
cathode
side,
interrupting
the
electrical
 current
of
the
cell.
 Ammeter
measures
the
magnitude
of
the
electrical
current.
 Voltmeter
measures
the
cell’s
voltage,
which
is
also
called
the
































.
 Electrons
flow
from
the
anode
to
the
cathode.;
ions
in
solution
are
free
to
flow
in
any
 direction.
 These
electrodes
are
called

























because
they
either
dissolve
(Cu)
or
form
(Ag)
 during
the
reaction.

 
 
 Bat...
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