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Which outcome results when thermal runaway affects equilibrium in methanol synthesis reactors?

A)Reduced catalyst surface area develops
B)Reverse reaction rate accelerates
C)The system shifts toward reactants
D)Product selectivity temporarily improves

💡 Explanation

An increased reverse reaction rate occurs because thermal runaway raises the reactor temperature rapidly, enhancing the endothermic reverse reaction via decreased *activation energy*. Therefore, the equilibrium quickly shifts toward the reactants, rather than toward products at lower temperatures initially.

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