Concept explainers
(a)
Interpretation:
The given sodium hydrogen oxalate aqueous solution, whether is acidic, basic or neutral has to be identified.
Concept introduction:
The aqueous of acidic, basic or neutral is identified by using following method.
The depending on an ion’s ability to react with water,
If the solution is neutral, the anion from strong acid and the cation from strong base.
If the solution is acidic, the anion from strong acid (or highly charged metal cation) and the cation from weak base.
If the solution is basic, the anion from weak acid and the cation from strong base.
Acidic solution:
If the solution is acidic, it would form from cation of weak base and anion of strong acid.
In addition, small, highly charged metal cation and anion of strong acid are acidic solution.
The
Basic solution:
If the solution is basic, it would form from cation of strong base and anion of weak acid.
Neutral solution:
If the solution is neutral, it would form from cation of strong base and anion of strong acid.
(b)
Interpretation:
The given Potassium hydrogen malonate aqueous solution, whether is acidic, basic or neutral has to be identified.
Concept introduction:
Refer to part (a)
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