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Which of the following statements about pH and H+ ion concentration is incorrect? [2000]
- a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.
- b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7
- c)pH of pure neutral water is not zero
- d)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Which of the following statements about pH and H+ ion concentration is...
CH3COOH is weak acid while NaOH is strong base, so one equivalent of NaOH can not be neutralized with one equivalent of CH3COOH.
Hence the solution of one equivalent of each does not have pH value as 7. Its pH will be towards basic side as NaOH is a strong base hence conc. of OH– will be more than the conc. of H+.
Hence the solution of one equivalent of each does not have pH value as 7. Its pH will be towards basic side as NaOH is a strong base hence conc. of OH– will be more than the conc. of H+.
Most Upvoted Answer
Which of the following statements about pH and H+ ion concentration is...
Statement: A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7.
Explanation:
pH: pH is a measure of the acidity or alkalinity of a solution. It is defined as the negative logarithm (base 10) of the concentration of H+ ions in a solution.
H+ ion concentration: The H+ ion concentration is a measure of the number of H+ ions present in a solution.
Analysis of the statement:
The statement claims that when one equivalent of CH3COOH (acetic acid) and one equivalent of NaOH (sodium hydroxide) are mixed together, the resulting solution will have a pH of 7. This statement is incorrect.
Explanation of why the statement is incorrect:
Acetic acid (CH3COOH):
- Acetic acid is a weak acid, meaning it does not completely dissociate in water.
- When acetic acid dissolves in water, it donates a proton (H+) to water molecules, leading to the formation of hydronium ions (H3O+).
- The equilibrium reaction for the dissociation of acetic acid is: CH3COOH + H2O ⇌ CH3COO- + H3O+
- Since acetic acid is a weak acid, the concentration of H3O+ ions in the solution is relatively low.
Sodium hydroxide (NaOH):
- Sodium hydroxide is a strong base, meaning it completely dissociates in water.
- When sodium hydroxide dissolves in water, it dissociates into sodium ions (Na+) and hydroxide ions (OH-).
- The equilibrium reaction for the dissociation of sodium hydroxide is: NaOH → Na+ + OH-
- Since sodium hydroxide is a strong base, the concentration of OH- ions in the solution is relatively high.
Mixture of CH3COOH and NaOH:
- When one equivalent of CH3COOH and one equivalent of NaOH are mixed together, they react in a 1:1 ratio to form water and sodium acetate (CH3COONa).
- The reaction between acetic acid and sodium hydroxide is: CH3COOH + NaOH → CH3COONa + H2O
- Since the reaction between a weak acid (CH3COOH) and a strong base (NaOH) results in the formation of a weak acid salt (CH3COONa), the solution will be slightly acidic.
- The pH of the resulting solution will be less than 7, indicating acidity.
Conclusion:
The correct statement should be: A solution of the mixture of
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Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer?
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Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer?.
Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer?.
Solutions for Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
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Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following statements about pH and H+ ion concentration is incorrect? [2000]a)Addition of one drop of concentrated HCl in NH4OH solution decreases pH of the solution.b)A solution of the mixture of one equivalent of each of CH3COOH and NaOH has a pH of 7c)pH of pure neutral water is not zerod)A cold and concentrated H2SO4 has lower H+ ion concentration than a dilute solution of H2SO4Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 11 tests.
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