How many grams of NaOH is to be added to one litre of1 M H_2CO_3 to get a HCO_3^(-) //CO_3^(-2)buffer of maximum capacity ?

How many grams of NaOH is to be added to one litre of1 M H_2CO_3 to ge

1.	How many grams of NaOH is to be added to one litre of1 M H_2CO_3 to get a HCO_3^(-) //CO_3^(-2)buffer of maximum capacity ?
Answer» 90 gram 60 gram 20 gram 50 gram SOLUTION :Buffer of max capacity `rArr [HCO_3^(-)]= [CO_3^(2-) ]` ` rArr H_2CO_3` was NEUTRALIZED and `HCO_3^(-) ` was `1//2` neutralized i.e.,NaOH required `= 1xx 1 + 1 xx (1)/(2) = (3)/(2)" moles weight " = 40 xx (3)/(2)= 60 gms `