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Which of the following statements is correct about an aqueous solution of an acid and of a base ?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(iii) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base
  • a)
    (i) and (iii)
  • b)
    (ii) and (iii)
  • c)
    (i) and (iv)
  • d)
    (ii) and (iv)
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is correct about an aqueous solution...
Acidic solutions have pH less than 7 and basic solutions have pH more than 7
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Community Answer
Which of the following statements is correct about an aqueous solution...
The correct statement about an aqueous solution of an acid and a base is:

(ii) Higher the pH, weaker the acid
(iv) Lower the pH, weaker the base

Explanation:
- pH is a measure of the concentration of hydrogen ions (H+) in a solution. The lower the pH, the higher the concentration of H+ ions and the stronger the acid.
- Conversely, the higher the pH, the lower the concentration of H+ ions and the weaker the acid.
- Similarly, the higher the pH, the stronger the base, as it has a higher concentration of hydroxide ions (OH-) which combine with H+ ions to form water.
- And, the lower the pH, the weaker the base, as it has a lower concentration of hydroxide ions and hence less ability to neutralize acids.

Therefore, option D is correct as it includes the correct statements about the pH and the strength of acids and bases in aqueous solutions.
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Which of the following statements is correct about an aqueous solution of an acid and of a base ?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(iii) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer?
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Which of the following statements is correct about an aqueous solution of an acid and of a base ?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(iii) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Which of the following statements is correct about an aqueous solution of an acid and of a base ?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(iii) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct about an aqueous solution of an acid and of a base ?(i) Higher the pH, stronger the acid(ii) Higher the pH, weaker the acid(iii) Lower the pH, stronger the base(iv) Lower the pH, weaker the basea)(i) and (iii)b)(ii) and (iii)c)(i) and (iv)d)(ii) and (iv)Correct answer is option 'D'. Can you explain this answer?.
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