Which Equation Is Used to Calculate the Half-Life of the First-Order

question 37

Multiple Choice

Which equation is used to calculate the half-life of the first-order equation below? $\mathrm{A} \rightarrow 2 \mathrm{~B}$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { rate }=k[\mathrm{~A}]$

• A) t_1/2 = 2 × ln k
• B) t_1/2 = (ln k)/[A]_o
• C) t_1/2 = ln (k/2)
• D) t_1/2 = ln ([A]_o/k)
• E) t_1/2 = (ln 2)/k

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