InterviewSolution
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calculate `[H^(o+)]` and `[overset(Θ)OH]` in a `0.1M` solution of weak monoacitic base which is `2.0%` ionised. What is the `pH` of solution. |
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Answer» `{:(,B +,H_(2)O,hArr,BH^(oplus) ,+overset(Theta)(O)H),("Initial",0.1,-,0,,0),("concentration",,,,,),("Equilibrium",0.1(1-alpha),-,C alpha,,C alpha),("concentration",,,,,):}` Given `alpha = (2.0)/(100) = 2xx10^(-2)` `[overset(Θ)OH] = C alpha = 0.1 xx2xx10^(-2) = 2xx10^(-3)M` `pOH =- log (2xx10^(-3)) =- 0.3 +3 = 2.7` `pH = 14 - 2.7 = 11.3`. |
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