The pH of a solution containing 0.4 M HCO−3 and 0.2 M CO2−3 is:[Ka – InterviewSolution

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1.	The pH of a solution containing 0.4 M HCO−3 and 0.2 M CO2−3 is:[Ka1(H2CO3)=4×10−7;Ka2(HCO−3)=4×10−11](Given, log 4=0.60, log 0.5=−0.3)
Answer» The $p H$ of a solution containing $0.4 M$ $H C O_{3}^{-}$ and $0.2 M$ $C O_{3}^{2 -}$ is: $[K_{a_{1}} (H_{2} C O_{3}) = 4 \times 10^{- 7}; K_{a_{2}} (H C O_{3}^{-}) = 4 \times 10^{- 11}]$ $(G i v e n, l o g 4 = 0.60, l o g 0.5 = - 0.3)$

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