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What volume of 0.2 M `RNH_(3)CI` solution should be added to 100 mL of 0.1 M `RNH_(2)` solution to produce a buffer solution of pH=8.7 ? [Given : `pK_(b)` of `RNH_(2)=5`, log 2=0.3]A. 50 mLB. 100 mLC. 200 mLD. None of these

Answer» Correct Answer - b


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