Author Question: The reaction is known to be zero order in A with a rate constant of 5.0 102 mol/L s at 25C. An ... (Read 19 times)

fbq8i · **on:** Mar 21, 2021

Question 1

The reaction

has the following rate law:

After a period of 2.7 × 10³ s, the concentration of NO falls from an initial value of 2.8 × 10^–3 mol/L to 2.0 × 10^–3 mol/L. What is the rate constant, k?

◦ 1.5 × 10^–7M^–1·s^–1

◦ 5.3 × 10^–2M^–1·s^–1

◦ 3.2 × 10^–1M^–1·s^–1

◦ 1.2 × 10^–4M^–1·s^–1

◦ 2.6 × 10^–2M^–1·s^–1

Question 2

The reaction

is known to be zero order in A with a rate constant of 5.0 × 10^–2 mol/L s at 25°C. An experiment was run at 25°C where [A]₀ = 1.7 × 10^–3M. The half-life for the reaction is

◦ 1.7 × 10^–2s
◦ 1.7 × 10²s
◦ 5.0 × 10^–2 s
◦ 3.4 × 10^–4s
◦ None of these are correct.

morganmarie791 · **Reply #1 on:** Mar 21, 2021

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