What is the pH of 0.1 M NaHCO3 ? K1 = 4.5 10-7, K2 = 4.5 10-11 for carbonic acids.(Given: log 2 = 0.3, log 3 = 0.48)
5.64
6.84
9.66
8.34
Therefore, option(4) is correct
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