Which one of the following salts would produce a basic solution when dissolved in water?
FeCl3
NaBr
Ca(C2H3O2)2
KNO3
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Answers (2)
You are asking about the hydrolysis of salts, and specifically, individual ions. Hydrolysis is the reaction of an ion with water.
FeCl3 --> Fe3+ + 3Cl-
Cl- does not hydrolyze. It is the anion of a strong acid. Fe3+ hydrolyzes as...
Fe3+ + HOH --> [FeOH]2+ + H+
acidic solution
NaBr --> Na+ + Br-
No hydrolysis - neutral solution
Na+ is cation of strong base. Br- is anion of strong acid.
Ca(C2H3O2)2 --> Ca2+ + 2C2H3O2-
Ca2+ doesn't hydrolyze. Cation of strong base
C2H3O2- + HOH --> HC2H3O2 + OH-
Basic solution
KNO3 --> K+ + NO3-
No hydrolysis - neutral solution
K+ is cation of strong base, NO3- is anion of strong acid
============ Follow up ==============
With respect, George really has some difficulty with this concept, and doesn't offer any help at all. NaBr will form a neutral solution. HBr is NOT a weak acid. It is a strong acid.
dear, i think you mean a basic salt dissolved in water. A basic salt is the product of a neutralization reaction between a weak acid and a strong base. Hence, the basic attribute of the salt will be dominant, leaving the effervescent of the acidic property kinda recessive. To not sound in an odd way, NaBr should be a basic salt as it is the product of a weak acid and a strong base..... e.g. NaOH and HBr.... I'm not too sure about others but i feel NaBr is one of them... hope this helps