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In a pure zero-order reaction, how does the time required for 75% completion () relate to the time rChemical Kinetics Chemistry Question

Question

In a pure zero-order reaction, how does the time required for 75% completion ($t_{75\%}$) relate to the time required for 50% completion ($t_{50\%}$)?

Answer: A

💡 Solution & Explanation

For zero order, $x = kt$. At 50%, $0.5a = k(t_{50\%})$. At 75%, $0.75a = k(t_{75\%})$. Dividing the equations yields $t_{75\%} / t_{50\%} = 0.75 / 0.5 = 1.5$.

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