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JEE Main20208 Jan 2020Morning ShiftChemistryRedox ReactionsActual

The strength of an aqueous N a O H solution is most accurately determined by titrating: (Note: consider that an appropriate indicator is used)

Options

  1. AA q . N a O H in a pipette and aqueous oxalic acid in a burette
  2. BA q . N a O H in a burette and aqueous oxalic acid in a conical flask
  3. CA q . N a O H in a burette and concentrate H 2 S O 4 in a conical flask
  4. DA q . N a O H in a volumetric flask and concentrated H 2 S O 4 in a conical flask

Correct answer

B. A q . N a O H in a burette and aqueous oxalic acid in a conical flask

Step-by-step solution

Oxalic acid is a primary standard solution while H2SO4 is a secondary standard solution. Titration is a common laboratory method of quantitative chemical analysis to determine the concentration of an identified analyte. A reagent, termed the titrant or titrator, is prepared as a standard solution of known concentration and volume.

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