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In aqueous solution the ionization constants for carbonic acid are
K1 = 4.2 × 10–7 and K2 = 4.8 × 10–11.
Select the correct statement for a saturated 0.034 M solution of the carbonic acid.
  • a)
    The concentration of  is 0.034 M.
  • b)
    The concentration of  is greater than that of   .
  • c)
    The concentrations of  H+ and  are approximately equal.
  • d)
    The concentration of  H+ is double that of 
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In aqueous solution the ionization constants for carbonic acid areK1 =...
As H2CO3 is a weak acid so the concentration of H2CO3 will remain 0.034 as 0.034 >> x.

As   is again a weak acid (weaker than H2CO3) with x >> y.

Note : [H3O+] = H+ from first step (x) and from second step (y) = (x + y)

So the concentration of  concentrations obtained from the first step. As the dissociation will be very low in second step so there will be no change in these concentrations.
Thus the final concentrations are
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In aqueous solution the ionization constants for carbonic acid areK1 = 4.2 × 10–7 and K2 = 4.8 × 10–11.Select the correct statement for a saturated 0.034 M solution of thecarbonic acid.a)The concentration of is 0.034 M.b)The concentration ofis greater than that of .c)The concentrations of H+ andare approximately equal.d)The concentration of H+ is double that ofCorrect answer is option 'C'. Can you explain this answer?
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In aqueous solution the ionization constants for carbonic acid areK1 = 4.2 × 10–7 and K2 = 4.8 × 10–11.Select the correct statement for a saturated 0.034 M solution of thecarbonic acid.a)The concentration of is 0.034 M.b)The concentration ofis greater than that of .c)The concentrations of H+ andare approximately equal.d)The concentration of H+ is double that ofCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about In aqueous solution the ionization constants for carbonic acid areK1 = 4.2 × 10–7 and K2 = 4.8 × 10–11.Select the correct statement for a saturated 0.034 M solution of thecarbonic acid.a)The concentration of is 0.034 M.b)The concentration ofis greater than that of .c)The concentrations of H+ andare approximately equal.d)The concentration of H+ is double that ofCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In aqueous solution the ionization constants for carbonic acid areK1 = 4.2 × 10–7 and K2 = 4.8 × 10–11.Select the correct statement for a saturated 0.034 M solution of thecarbonic acid.a)The concentration of is 0.034 M.b)The concentration ofis greater than that of .c)The concentrations of H+ andare approximately equal.d)The concentration of H+ is double that ofCorrect answer is option 'C'. Can you explain this answer?.
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