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← ScienceIn a catalytic converter operating below optimal temperature, which outcome is accelerated due to boundary layer effects?
A)Rate of carbon monoxide production
B)Catalyst surface poisoning by lead✓
C)Rate of nitrogen oxides reduction
D)Sulphur dioxide chemical adsorption
💡 Explanation
Below optimal temperature, boundary layer thickness increases, hindering diffusion; therefore catalyst surface poisoning by lead accelerates because of increased lead concentration in that boundary layer, rather than changing production or reduction rates significantly.
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