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Ostwald dilution law of weak electrolyte...

Ostwald dilution law of weak electrolyte `HA` can be given as :

A

`K_(a)=(alpha.c)/((1-alpha)c)`

B

`K_(a)=(alpha^(2).c)/((1-alpha))`

C

`K_(a)=((alpha^(2))/(1-alpha).alpha)^(2))`

D

`K_(a)=(alpha^(2).c)/(1-alpha^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-IONIC EQUILIBRUIM-Exercise -1
  1. Ostwald’s dilution law gives satisfactory results for -

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  2. For a binary weak electrolyte, the degree of dissociation is proportio...

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  3. Ostwald dilution law of weak electrolyte HA can be given as :

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  4. The value of PkW" at "25^@C is -

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  5. Kw for water at 25^(@)C is equal to 10^(-14). What is its value at 90^...

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  6. Select the correct statement-

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  7. For an acid solution the [OH^(-)] is

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  8. The aqueous solution whose pH =0 is-

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  9. Pure water ionises as 2H2O (?) Leftrightarrow H3O^+ (a)+OH^¯" (aq)...

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  10. The pKw of water at 50^@C is 13.40. An aqueous solution at 50^@C has p...

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  11. For a 100 ml solution of 10–2 M NaOH the ratio pH: pOH would be –

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  12. How many moles of HCl must be removed from 1 litre of aqueous HCl solu...

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  13. 4.0 g of NaOH and 4.9 g of H(2)SO(4) are dissolved in water and volume...

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  14. Nicotinic acid (K(a)=1.4xx10^(-5)) is repersented by the formula HNiC....

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  15. A monoprotic acid in a 0.1 M solution ionizes to 0.001%. Its ionisatio...

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  16. If the concentration of the weak monoprotic acid HA is C mmol L^(-1) ...

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  17. The formula to calculate pKa for acetic acid is

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  18. K1 and K2 are the first and second dissociation constants of oxalic ac...

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  19. K(a(1)), K(a(2)) and K(a(3)) are the three dissociation constants of H...

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  20. For two weak acids A and B, the ratio of their percent ionization is 4...

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