solution of NaOH is measured to have resistivity
. The molar conductivity of the solution will be
. (Nearest integer)
Text Solution
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Determine the conductivity from the resistivity.
The resistivity is given as
.
Convert this into ohm-meters:
.
Conductivity is the reciprocal of resistivity:
.
Find the concentration of NaOH in
.
A
solution means there are 0.2 grams of NaOH per 100 mL of solution.
In 1 liter (1000 mL) there are:
.
The molar mass of NaOH is approximately
. Thus, the molarity is:
Molarity
.
Since
, converting to SI units (
):
.
Calculate the molar conductivity in SI units.
Molar conductivity
is given by:
.
Substituting the values:
.
Convert the molar conductivity to the desired units (
).
First, convert the conductivity:

Now, convert the area units. Recall that:
.
So,
.
The problem asks for the answer in the form [blank]
.
Expressing
in this form:
Thus, the molar conductivity is
.
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