General Chemistry
Arrange the solutions in order of increasing acidity.
NaCl, NH4Cl, NaHCO3, NH4ClO2, NaOH
NaHCO3 < NaOH < NaCl < NH4Cl < NH4ClO2
NaOH < NaHCO3 < NaCl < NH4Cl < NH4ClO2
NaOH < NaHCO3 < NaCl < NH4ClO2 < NH4Cl
NaOH < NaCl < NaHCO3 < NH4ClO2 < NH4Cl