A buffer solution is 0.441 M in HNO2 and 0.245 M in KNO2. If Ka for HNO2 is 4.5E-4, what is the pH of this buffer solution?
. From the
buffer of weak acid and salt of weak acid-strong base (Acidic buffer)
pH = pKa
+ log[KNO2] / [HNO2]
= - log[4.5 x 10^(-4)] = 3.347
pH = 3.347 + log [0.245]
=3.347 + log (0.555)
please check soilution..any doubts do let me know..regards..Sumit sans
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