The rate of reaction involving ions can be studied by _ method.
Correct answer: D. Electrical conductivity
- A. Dilatometric
- B. Refractometric
- C. Optical rotation
- D. Electrical conductivity
Explanation
A is incorrect as a dilatometer is a scientific instrument that measures volume changes caused by a physical or chemical process.B is incorrect as refractometry is an optical analytical technique used to establish the refractive index of transparent and translucent substances. The method provides information about the substance's chemical composition, purity, and physical properties and is commonly used as a quality control method.C is incorrect as optical rotation, also known as polarization rotation or circular birefringence, is the rotation of the orientation of the plane of polarization about the optical axis of linearly polarized light as it travels through certain materials.D is correct as electrical conductivity tells us how well a material will allow electricity to travel through it.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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About Rate of Reaction
Reaction rate measures the change in concentration of a reactant or product per unit time. Questions connect rate with concentration, temperature, pressure, surface area, catalysts and nature of reactants, and may involve rate laws, reaction order, activation energy and collision theory. Rate describes speed, whereas equilibrium describes the final balance of opposing reactions.
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