2. Arrange in descending order pH 0.1M solutions:
a) Ba(OH)2, HNO2, HNO3, H2SO4, NaNO2, NaNO3, NaOH;
b) HCl, KCl, KOH, NH3, NH4Cl, (NH4)2SO4;
c) Cs2HPO4 , H3PO4 , Na3PO4 , RbH2PO4 .
Justify the answers by marking the place of each of the solutions in the row with a mark: strong acid, weak base, salt with a hydrolyzable anion, etc.
2. Arrange in descending order pH 0.1M solutions:
a) Ba(OH)2, HNO2, HNO3, H2SO4, NaNO2, NaNO3, NaOH;
b) HCl, KCl, KOH, NH3, NH4Cl, (NH4)2SO4;
c) Cs2HPO4 , H3PO4 , Na3PO4 , RbH2PO4 .
Justify the answers by marking the place of each of the solutions in the row with a mark: strong acid, weak base, salt with a hydrolyzable anion, etc.

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