A) 4.5
B) 2.5
C) 9.5
D) 7.0
Correct Answer: C
Solution :
Aqueous buffered solution of HA 50% H A is ionised\[\frac{mF}{M}\]\[\frac{(M+m)F}{m}\] Buffer solution of weak acid\[\frac{mF}{(m+M)}\]acidic buffer \[\frac{MF}{(m+M)}\] or \[-20cm\] \[-10cm\] \[+20\text{ }cm\] Alternate Solution For buffer solution \[+10\text{ }cm\] as [HA] is 50% ionised so- [Salt] = [Acid] hence,\[{{T}_{1}}\] Since, \[{{T}_{2}}\] therefore, \[{{l}_{1}}\]
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