calculate the molarity of the solution if 4g Naoh is present in 100ml aqueous solution
Answers
Answered by
0
Answer:
perhaps 40...................
Answered by
1
Answer:
Well, first we have to convert
4
g
of sodium hydroxide into moles.
N
a
O
H
has a molar mass of
40
g
/
m
o
l
.
So here, there exists
4
g
40
g
/
m
o
l
=
0.1
m
o
l
Then, molarity is expressed by the equation:
molarity
=
moles of solute
liters of solution
So now, we need to convert
100
m
L
into
L
.
1
L
=
1000
m
L
∴
100
m
L
=
0.1
L
Since we have now the desired units, we plug them into the equation.
∴
molarity
=
0.1mol
0.1L
=
1
m
o
l
/
L
=
1
M
So, the molarity of the solution will be
1
M
.
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