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Which of the following salts, when dissolved in water produces the solution with a pH closest...

Which of the following salts, when dissolved in water produces the solution with a pH closest to 7.00?   A)NH4I     B)Na2O            C)KHCO3              D)CsCl         E)K2CO3

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Answer #1

answer : D) CsCl     

explanation:

it is the salt of strong acid HCl and strong base CsOH . so the salt pH should be 7

CsOH + HCl ----------------------> CsCl + H2O

why remaining options are not correct :

A) NH4I it is the salt of weak base and strong acid so pH <7

B) Na2O . it is perfectly baisc oxide . so its pH >7

C) KHCO3 . it is the salt of strong base and weak acid . so its pH >7

E ) K2CO3 . it is the salt of strong base and weak acid . so its pH >7

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