MCQ
Which of the following compounds we use in our laboratory as a standard solution $($titrant$) \ ?$
  • A
    $\mathrm{KMnO}_4 $
  • B
    $ \mathrm{~K}_2 \mathrm{Cr}_2 \mathrm{O}_7 $
  • C
    $ \mathrm{Na}_2 \mathrm{S}_2 \mathrm{O}_3 $​
  • All of these

Answer

Correct option: D.
All of these
A reagent, called the titrant or titrator is prepared as a standard solution.
A known concentration and volume of titrant reacts with a solution of analyte or titrand to determine concentration.
$\mathrm{KMnO}_4, \mathrm{~K}_2 \mathrm{Cr}_2 \mathrm{O}_7, \mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3$​ etc. are compounds we use in our laboratory as a standard solution.

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