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Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them?
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Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0....
Option B because it is a weak acid and a salt of weak acid and strong base
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Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0....
Buffer Solution:
A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added to it. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer solutions are important in various applications, including biological systems, chemical reactions, and laboratory experiments.
A) NH4OH NaOH:
- NH4OH is a weak base, and NaOH is a strong base.
- NH4OH can partially ionize in water to form NH4+ and OH- ions.
- NaOH is a strong base that completely ionizes in water to produce Na+ and OH- ions.
- Since both NH4OH and NaOH are bases, they cannot act as a buffer solution together.
B) HCOOH CH3COONa:
- HCOOH is a weak acid (formic acid), and CH3COONa is the sodium salt of a weak acid (acetic acid).
- HCOOH can partially ionize in water to form HCOO- and H+ ions.
- CH3COONa dissociates in water to produce CH3COO- and Na+ ions.
- HCOOH and CH3COONa together can form a buffer solution as they contain a weak acid and its conjugate base.
C) 40ml 0.1M NaCN 20ml of 0.1M HCl:
- NaCN is the sodium salt of a weak acid (hydrocyanic acid), and HCl is a strong acid.
- NaCN dissociates in water to produce CN- and Na+ ions.
- HCl completely ionizes in water to form H+ and Cl- ions.
- The combination of NaCN and HCl does not form a buffer solution as HCl is a strong acid and completely ionizes, whereas NaCN is a weak acid salt.
D) None of them:
- The only option that can act as a buffer solution is B) HCOOH CH3COONa.
- Option A) consists of two bases, option C) consists of a strong acid and a weak acid salt, which does not form a buffer solution.
- Therefore, the correct answer is D) None of them, except for option B) HCOOH CH3COONa.
A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added to it. It consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer solutions are important in various applications, including biological systems, chemical reactions, and laboratory experiments.
A) NH4OH NaOH:
- NH4OH is a weak base, and NaOH is a strong base.
- NH4OH can partially ionize in water to form NH4+ and OH- ions.
- NaOH is a strong base that completely ionizes in water to produce Na+ and OH- ions.
- Since both NH4OH and NaOH are bases, they cannot act as a buffer solution together.
B) HCOOH CH3COONa:
- HCOOH is a weak acid (formic acid), and CH3COONa is the sodium salt of a weak acid (acetic acid).
- HCOOH can partially ionize in water to form HCOO- and H+ ions.
- CH3COONa dissociates in water to produce CH3COO- and Na+ ions.
- HCOOH and CH3COONa together can form a buffer solution as they contain a weak acid and its conjugate base.
C) 40ml 0.1M NaCN 20ml of 0.1M HCl:
- NaCN is the sodium salt of a weak acid (hydrocyanic acid), and HCl is a strong acid.
- NaCN dissociates in water to produce CN- and Na+ ions.
- HCl completely ionizes in water to form H+ and Cl- ions.
- The combination of NaCN and HCl does not form a buffer solution as HCl is a strong acid and completely ionizes, whereas NaCN is a weak acid salt.
D) None of them:
- The only option that can act as a buffer solution is B) HCOOH CH3COONa.
- Option A) consists of two bases, option C) consists of a strong acid and a weak acid salt, which does not form a buffer solution.
- Therefore, the correct answer is D) None of them, except for option B) HCOOH CH3COONa.
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Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them?
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Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them?.
Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which can act as buffer A) NH4OH NaOH B) HCOOH CH3COONa C) 40ml 0.1M NaCN 20ml of 0.1M HCl D) none of them?.
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