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A saturated solution of o- nitrophenol h...

A saturated solution of o- nitrophenol has a pH equal to 4.53 then its solubility in water is `(pK_a=7.23) `

A

` 2.085 g//"lit"`

B

` 20. 85 g //"lit"`

C

` 10. 425g//"lit"`

D

` 1.0425 g//"lit"`

Text Solution

Verified by Experts

The correct Answer is:
A
` O- " nitrophenol" _(s) hArr O- " nitro phenol "_((aq) ) `
` O- "nitrophenol"_((aq)) hArr O- " nitro phenol " + H^(+) `
` S(1-alpha )" " S alpha " " S alpha `
` [H^(+) ]=S alpha =sqrt( SKa) `
` -log [H^(+) ] =(-log S -log Ka)/( 2) `
` pH =(-log S - log Ka )/( 2) `
` pH =(- log S +pKa)/( 2) `
` - log S = 2xx 4.53 -7.23 =1.83`
` rArr S = 1 .48 xx 10 ^(-2) "mol" //"lit" `
` M. wt = 139 rArr S =2.06 g//lit `
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AAKASH SERIES-IONIC EQUILIBRIUM -PRACTICE SHEET (EXERCISE -IV LEVEL -I (ADVANCED) (Straight Objective Type Questions))
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  8. When HCl gas is passed through a saturated solution of common salt, pu...

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  9. How do we differentiate between Fe^(3+) and Cr^(3+) in group III ?

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  10. Why only As^(+3) gets precipitated as As(2) S(3) and not Zn^(2+) as ...

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  11. A saturated solution of o- nitrophenol has a pH equal to 4.53 then its...

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  12. In the lollowing reuction. AgCl +KI hArr KCl + Agl. As Kl is added, t...

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  13. K(Sp) of MX =K(sp) " of " MX2. Which is more soluble ?

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  14. The solubility of solid silver chromate. Ag(2) CrO(4) . is determined ...

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  15. The maximum pH of a solution which is 0.10 M in Mg ^(2+ ) from which...

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  16. What will be the result if 100 mlL of 0.06 M Mg(NO(2))(2) is added to ...

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  17. What can be permitted concentration of Ag^(+) ions in 0.1 M HCN solu...

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  18. When HCl gas is passed through a saturated solution of common salt, pu...

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  19. How do we differentiate between Fe^(3+) and Cr^(3+) in group III ?

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  20. Why only As^(+3) gets precipitated as As(2) S(3) and not Zn^(2+) as ...

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