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(Solved): 5.0mL of 0.40M solution NaOH is added to a 85.mL buffer solution of a containing HNO2 and KNO2 ...
5.0mL of 0.40M solution NaOH is added to a 85.mL buffer solution of a containing HNO2? and KNO2? with the concentration of HNO2?0.11M and that of KNO2? 0.062. What is the concentration of the NaOH in the resulting solution after it is added to the buffer? 0.0620.0780.0840.0220.0?