Verified Solution • 2025–26 Session moderate

QAIPMT-2005-Ch-2478: NEET 2005 Chemistry - Class 12 AIPMT-2005-Ch-2478 Solution: What is the correct relationship between the pH of isomolar…

What is the correct relationship between the pH of isomolar solutions of sodium oxide,

Na_2O

(pH1), sodium sulphide,

Na_2S

(pH2), sodium selenide,

Na_2Se

(pH3) and sodium telluride

Na_2Te

(pH4)?

Multiple Choice Options

A $pH1>pH2>pH3>pH4$
B $pH1>pH2\approx pH3>pH4$
C $pH1<pH2<pH3<pH4$
D $pH1<pH2<pH3\approx pH4$

Step-by-Step Verified Solution

Basic character decreases down the group Thus Na 2 O is most basic. We know that more the basic compound more is the pH. Hence, pH 1 > pH 2 > pH 3 > pH 4

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