For which of the following salt pH of its aqueous solution is independent of concentration of salt.

Monjur Alahi

For which of the following salt pH of its aqueous solution is independent of concentration of salt.
A. `Na_(2)HPO_(3)`
B. `NaH_(2)PO_(2)`
C. `CH_(3)COONH_(4)`
D. `CH_(3)COONa`


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Salim Ahmed Kawsar

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Correct Answer - C
`2AB_(2)iff2AB +B_(2)`
`"1 0 0"`
`"1-x x "x//2`
Total moles at equilibrium = `1 + (x)/(2)`
`k_(p)=(((x)/(1+x//2)xxP)^(2)((x//2)/(1+x//2)xxP))/(((1-x)/(1+x//2)xxP)^(2)), k_(p)=(x^(3)P)/(2) " , "x^(3)=(2k_(p))/(P)implies x=((2k_(p))/(P))^(1//3)`

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