This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Hey ~Dorinda — ready when you are. To determine the half-life of a first-order reaction, use the formula: t_1/2 = ((2))/(k) where t_1/2 is the half-life and k is the rate constant. Step 1: Identify the given rate constant. The rate constant k = 4.5 × 10^-3 sec^-1. Step 2: Substitute the value of k into the half-life formula. t_1/2 = ((2))/(4.5 × 10^-3) sec^-1 Step 3: Calculate the value. We know that (2) ≈ 0.693. t_1/2 = (0.693)/(4.5 × 10^-3) sec^-1 t_1/2 = (0.693)/(0.0045) s t_1/2 ≈ 154 s Comparing this result with the given options: (A) 1540 s (B) 15.4 s (C) 1.54 s (D) 154 s The calculated half-life matches option (D). The final answer is D) 154 s. Send me the next one 📸