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which of these 0.10 M solutions will have a pH lower than 7.00? KCN, CH3NH3I, Al(NO3)3...

which of these 0.10 M solutions will have a pH lower than 7.00?

KCN, CH3NH3I, Al(NO3)3 ???

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Homework Answers

Answer #1

KCN ( salt of HCN & KOH )

Strong base and weak acid so basic effect will dominate and pH will be greater than 7.0

CH3NH3I ( salt of CH3NH2 & HI )

Strong acid and weak base so acidic effect will dominate and pH will be less than 7.0 )

Al(NO3)3 ( salt of Al(OH)3 & HNO3 )

Strong acid and weak base. Acidic effect will dominate and pH will greater than 7.0

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