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Arrange the solutions in order of increasing basicity: CH3NH3Br, KOH, KBr, KCN, C5H5NHNO2.
17. Acid and Base Equilibrium
Ionic Salts
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In aqueous solution, is sodium bromate, , expected to form an acidic, basic, or neutral solution?
A
Neutral, because is the cation of a strong base and is the anion of the strong acid .
B
Cannot be predicted without the concentration, because all salts are amphoteric in water.
C
Acidic, because hydrolyzes water to produce .
D
Basic, because is the conjugate base of the weak acid .
Verified step by step guidance1
Identify the ions present in sodium bromate (NaBrO\_3) when it dissolves in water: Na\^+ (sodium ion) and BrO\_3\^- (bromate ion).
Determine the nature of the cation Na\^+: since Na\^+ comes from NaOH, a strong base, it does not hydrolyze water and does not affect the pH significantly.
Determine the nature of the anion BrO\_3\^-: it is the conjugate base of HBrO\_3 (bromic acid), which is a strong acid, so BrO\_3\^- does not hydrolyze water to affect pH.
Since neither the cation nor the anion hydrolyzes water to produce H\_3O\^+ or OH\^-, the solution remains neutral.
Conclude that an aqueous solution of sodium bromate is expected to be neutral because it is composed of ions from a strong acid and a strong base.
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