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If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then its ionization constant will be :
  • a)
    0.8 × 10–5
  • b)
    1.79 × 10–5
  • c)
    0.182 × 10–5
  • d)
    none of the above
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If 0.1 M of a weak acid is taken, and its percentage of degree of ion...
Percentage of degree of ionization = 1.34%
∴ Degree of ionization (α) = 0.0134
Free Test
Community Answer
If 0.1 M of a weak acid is taken, and its percentage of degree of ion...
Given data:
- Concentration of weak acid (CH3COOH) = 0.1 M
- Percentage of degree of ionization = 1.34%

Calculating the ionization constant (Ka):

Step 1: Calculate the initial concentration of CH3COOH (HA) and CH3COO- (A-)
- Initial concentration of HA = 0.1 M
- Initial concentration of A- = 0 M

Step 2: Calculate the change in concentration (x) due to ionization
- Degree of ionization = x / 0.1 x 100
- 1.34% = x / 0.1 x 100
- x = 0.00134 M

Step 3: Calculate the equilibrium concentrations
- Concentration of HA at equilibrium = 0.1 - x = 0.1 - 0.00134 = 0.09866 M
- Concentration of A- at equilibrium = x = 0.00134 M

Step 4: Calculate the ionization constant (Ka)
- Ka = [CH3COO-][H3O+] / [CH3COOH]
- Ka = (0.00134)(0.00134) / 0.09866
- Ka = 0.000001797
Therefore, the ionization constant (Ka) of the weak acid (CH3COOH) is 1.79 x 10^-5, which corresponds to option (b).
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If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then its ionization constant will be :a)0.8 × 10–5b)1.79 × 10–5c)0.182 × 10–5d)none of the aboveCorrect answer is option 'C'. Can you explain this answer?
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If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then its ionization constant will be :a)0.8 × 10–5b)1.79 × 10–5c)0.182 × 10–5d)none of the aboveCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then its ionization constant will be :a)0.8 × 10–5b)1.79 × 10–5c)0.182 × 10–5d)none of the aboveCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If 0.1 M of a weak acid is taken, and its percentage of degree of ionization is 1.34%, then its ionization constant will be :a)0.8 × 10–5b)1.79 × 10–5c)0.182 × 10–5d)none of the aboveCorrect answer is option 'C'. Can you explain this answer?.
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