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What is the correct relationship between...

What is the correct relationship between the pH of isomolar solutions of sodium oxide `(pH_(1))`, sodium sulphide `(pH_(2))`, sodium selenide `(pH_(3))` , and sodium telluride `(pH_(4)) ` ?

A

`pH_(1) gt pH_(2) = pH_(3) gt pH_(4)`

B

`pH_(1) lt pH_(2) lt pH_(3) lt pH_(4)`

C

`pH_(1) lt pH_(2) lt pH_(3) = pH_(4)`

D

`pH_(1) gt pH_(2) gt pH_(3) gt pH_(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
Order of acidic strength is
`H_(2)Te gt H_(2)Se gt H_(2)S gt H_(2)O `
`Na_(2)O ` is a salt of NaOH `+ H_(2)O and H_(2)O ` is least acidic among given acids hence pH in this case will be max .
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