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← ScienceWhich consequence results when excessive heat increases nitrous oxide decomposition?
A)Flame speed decreases drastically
B)Increased catalyst surface area
C)Runaway reaction accelerates rapidly✓
D)Equilibrium favors reactant reformation
💡 Explanation
Excessive heat provides energy driving the **chain branching** reactions faster, because more radicals overcome the activation energy barrier; therefore, the self-propagation accelerates, resulting in a thermal runaway, rapidly branching, rather than slower or reversed decomposition.
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