JEE MainChemistryRedox ReactionsMCQ+4 / −1
While titrating dilute HCl solution with aqueous NaOH, which of the following will not be required?
- APipette and distilled water
- BClamp and phenolphthalein
- CBurette and porcelain tile
- DBunsen burner and measuring cylinder
View written solutionFree
Correct answer: D
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Identify the experiment
The titration is: dilute HCl solution titrated with aqueous NaOH.
This is a simple acid–base titration:
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List the usual apparatus required in an acid–base titration
For such a titration, we generally need:
- Pipette: to measure a fixed volume of acid/base
- Burette: to deliver the titrant accurately
- Clamp/stand: to hold the burette
- Indicator (here, phenolphthalein can be used)
- Distilled water: for washing apparatus
- White/porcelain tile: to observe the endpoint clearly
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Check each option
Option A: Pipette and distilled water
- Pipette is required.
- Distilled water is required for rinsing/washing.
- So, this is required.
Option B: Clamp and phenolphthalein
- Clamp is required to hold the burette.
- Phenolphthalein is a suitable indicator for strong acid–strong base titration.
- So, this is required.
Option C: Burette and porcelain tile
- Burette is essential.
- Porcelain tile helps in seeing the colour change clearly.
- So, this is required.
Option D: Bunsen burner and measuring cylinder
- Bunsen burner is not needed in a normal acid–base titration.
- Measuring cylinder is not used for accurate titration measurements; pipette and burette are used instead.
- So, this option contains apparatus that will not be required.
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Conclusion
The apparatus not required is:
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Comparison with stored correct answer
Stored correct answer: D
My derived answer is also D, so they agree.
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