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
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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