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At certain te...

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At certain temperature the conductivity of pure water is 6.61/100000000ohm cm the ionic conductance of H+ and OH- ions at this temperature are 350 and 200ohm-1 cm2 mol-1 respectively the ionic product of water at this temperature is

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Q. Specific conductance of pure water at

25^{\circ}

0.58 \times 10^{- 7} m h o c m^{- 1}

. The ionic product of water (

K_{W}

) if ionic conductances of

H^{+}

O H^{-}

ions at infinite dilution are 350 and

198 m h o c m^{2}

respectively at

25^{\circ} C

Q. The molar conductance of a

0.01 M

solution of acetic acid was found to be

16.30 \times 10^{- 4} S m^{2} m o l^{- 1}

25^{\circ} C

. The molar ionic conductance of

H^{+}

C H_{3} C O O^{-}

ions at infinite dilution are

349.8 \times 10^{- 4}

40.9 \times 10^{- 4} S m^{2} m o l^{- 1}

, respectively, at the same temperature. What percentage of acetic acid is dissociated at this concentration?

Q. At certain temperature

(T)

if the conductivity of pure water is

5.5 \times 10^{- 7} S c m^{- 1}

, then calculate

p H

of water at given temperature.
Given :

λ_{H +}^{\infty} = 350 S c m^{2} s q^{- 1}; λ_{O H^{-}}^{\infty} \infty 200 S c m^{2} e q^{- 1}; λ_{O H^{-}}^{\infty} = 200 S c m^{2} s q^{- 1}

Q. The specific conductance of a saturated solution of AgCl at

25^{0}

C after subtracting the specific conductance of water is 2.28 x

10^{- 4} S m^{- 1}

. Calculate the solubility of AgCl in gram per

d m^{3}

at this temperature. The molar ionic conductances of

A g^{+}

C l^{-}

ions are 73.3 x

10^{- 4}

10^{- 4} S m^{2} m o l^{- 1}

. (Ag: 108 and Cl: 35.5).

Q. A decinormal solution of

N a C l

has specific conductivity equal to

0.0092

. If ionic conductances of

N a^{+}

C l^{-}

ions at the same temperature are

43.0

65.0 o h m^{- 1}

respectively, calculate the degree of dissociation of

N a C l

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Why Classification?

Standard IX Chemistry

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