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Calculate the concentration of OH^- ions...

Calculate the concentration of `OH^-` ions in a solution prepared by mixing equal volumes of 0.2 M methyl amine and 0.6 M `CH_3NH_3^+Cl^(-)[Given K_b=3.6xx10^-4]`

A

`1.2xx10^-4 M`

B

`3.6xx10^-2 M`

C

`1.85xx10^-5 M`

D

`3.6xx10^-4 M`

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