What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH1), sodium

sulphide (pH2), sodium selenide (pH3) and sodium telluride (pH4)

A) pH1pH2=pH3pH4

B) pH1pH2pH3pH4

C) pH1pH2pH3=pH4

D) pH1pH2pH3pH4

Statistics and Probability

What is the correct relationship between the pHs of isomolar solutions of sodium oxide