Homework Answers
For an acid
HX--> H+ + X- ,In solution acid ionizes like this
Ka= [H+][X-]/[HX]
So when Ka value is high , more H+ ions are formed. This makes acid
more
stronger. Hence higher the Ka value , the acid is stronger.
Among
the given set oxalic acid has highest Ka value [ 5.4E-2]. So it
is
the strongest acid
Answer
C. oxalic acid [Ka = 5.4E-2]
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