\(n_{SO_2}=0,18\left(mol\right);n_{KOH}=0,24\left(mol\right)\)
2OH- + SO2 ---> SO32- + H2O
0,24_____0,12_____0,12
SO2 + SO32- + H2O ---> 2HSO3-
0,06______0,06__________________0,12
\(\Rightarrow C_{M\left(K_2SO_3\right)}=0,25\left(M\right);C_{M\left(KHSO_3\right)}=0,5\left(M\right)\)