5% KOH5\%~ \mathrm {KOH}5% KOH
5% NaHCO35\%~ \mathrm {NaHCO_3}5% NaHCO3
5% Na2CO35\%~ \mathrm {Na_2CO_3}5% Na2CO3
5% NaOH5\%~ \mathrm {NaOH}5% NaOH
