alleryStart learning →Which of these is not one of the five factors named as affecting reaction rate?
AThe colour of the reaction vessel used
BThe temperature of the reactants used
CThe concentration of the reactants used
DThe presence of a catalyst in the mix
Answer & Solution
Correct answer: A. The colour of the reaction vessel used
1. The five factors are chemical nature, state of subdivision, temperature, concentration and the presence of a catalyst.
2. Temperature, concentration and catalyst all appear on that list.
3. The colour of the vessel is not on the list and has no bearing on how fast molecules react.
4. So the vessel colour is the odd one out.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 12 "Kinetics", section 12.2 Factors Affecting Reaction Rates_
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