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

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

1.	A saturated solution of o- nitrophenol has a pH equal to 4.53 then its solubility in water is (pK_a=7.23)
Answer» ` 2.085 g//"lit"` ` 20. 85 g //"lit"` ` 10. 425g//"lit"` ` 1.0425 g//"lit"` Solution :` 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 `