Chemistry Reaction Kinetics BUMHS 2023
PMDC Verified Question 22 of 80
In which method the rate of reaction involving ions can be studied?
A
Electrical conductivity method
B
Optical rotation method
C
Refractometric method
D
Spectrometry
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Electrical conductivity method
Concept:

Kinetic studies require monitoring a physical property that changes predictably as reactants turn into products.

Solution:

  • Ions in a solution carry electrical current.
  • If a chemical reaction produces new ions, consumes existing ions, or changes the mobility of the ions present, the overall electrical conductivity of the solution will change proportionally over time.
  • By continuously measuring this change using a conductivity meter, the rate of the reaction can be accurately tracked.


Why other options are incorrect:

Optical rotation is for chiral molecules (like sugars). Refractometry is for refractive index changes (typically pure liquids/organics). Spectrometry is for light absorbance (colored species/UV active).

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