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Question
HX is a weak acid (Ka=10−5). It forms a salt NaX(0.1M) on reacting with caustic soda. The degree of hydrolysis of NaX is:
HX is a weak acid (Ka=10−5). It forms a salt NaX(0.1M) on reacting with caustic soda. The degree of hydrolysis of NaX is:
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Solution
The correct option is A 0.01%
Degree of hydrolysis of salt of weak acid with strong base=√KW(cKa)Here, KW=10−14Ka=10−5c=0.1
=√10−1410−5×10−1
So degree of hydrolysis=√(10−8)=10−4
Here the obtained answer is not given in the option
Degree of hydrolysis of salt of weak acid with strong base=√KW(cKa)
Here, KW=10−14Ka=10−5c=0.1
=√10−1410−5×10−1
So degree of hydrolysis=√(10−8)
=10−4
Here the obtained answer is not given in the option
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