alleryStart learning →Rates of reactions involving aqueous electrolytes are conveniently followed by measuring which property?
AA change in the solution's conductivity
BA change in the solution's colour depth
CA change in the reaction vessel pressure
DA change in the total solution volume
Answer & Solution
Correct answer: A. A change in the solution's conductivity
1. Electrolytes carry current, so their concentrations set how well the solution conducts.
2. As an electrolyte is consumed or produced, the conductivity shifts, and that shift tracks the rate.
3. Colour absorption suits coloured substances and pressure suits gases, not dissolved ions as such.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.1 Chemical Reaction Rates_
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