Let, molecular weight of salt is M
(i) n-factor in acid-base titration = y
(ii) n-factor in redox titration=2×z
meq of acid in 30 mL = meq of NaOH
30×9.15M×y=27×0.1230×9.15M×(2×z)=36×0.12∴yz=32
Total cationic charge = total anionic charge
⇒x+y=2z∴x:y:z=1:3:2