Chemistry, asked by lavanyastuti, 8 months ago

Molar comductivity of NH4Cl, NaOH and NaCl at infinite dilution is 129.0, 217.0 and 106.8 ohm^-1cm^2mol^-1 respectively. Calculate the lambda(NH4OH).
If molar conductivity of 10^-2M NH,OH is 9.4
ohm^-1cm^-2mol^-1, calculate its degree of dissociation
and dissociation constant.

Answers

Answered by parmardushyant0864
0

Answer:

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Explanation:

ANSWER

Λ

m

NH

4

OH=?

Λ

m

(NH

4

Cl)=149.7 Ω

−1

cm

2

mol

−1

Λ

m

(NaOH)=248.1 Ω

−1

cm

2

mol

−1

Λ

m

(NaCl)=126.5 Ω

−1

cm

2

mol

−1

Λ

m

(NH

4

Cl)=Λ

NH

4

+

Cl

=149.7.....(i)

Λ

m

NaOH=Λ

Na

+

OH

=248.1.....(ii)

Λ

m

NaCl=Λ

Na

+

Cl

=126.5.....(iii)

Add equation (i) and (ii) and subtract equation (iii)

Λ

m

NH

4

OH=Λ

NH

4

Cl

NaOH

−Λ

NaCl

NH

4

+

OH

=149.7+248.1−126.5

Λ

m

NH

4

OH=271.3 Ω

−1

cm

2

mol

−1

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