Ionic EquilibriumHard

Question

The correct relationship between the pH of isomolar solutions of Na2O (pH1), Na2S (pH2) Na2Se(pH3) and Na2Te(pH4) is:

Options

A.pH1 > pH2 > pH3 > pH4
B.pH1 < pH2 < pH3 < pH4
C.pH1 < pH2 < pH3 = pH4
D.pH1 > pH2 = pH3 > pH4

Solution

Order of basic strength O2- > S2- > Se2- > Te2-

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