Author Question: Nitric oxide gas (NO) reacts with chlorine gas according to the chemical equation given below. NO ... (Read 41 times)

xxxxxxxxxxxx · **on:** Nov 5, 2023

Question 1

It takes 42.0 min for the concentration of a reactant in a first-order reaction to drop from 0.45 M to 0.32 M at 25°C. How long will it take for the reaction to be 90% complete?
◦ 13.0 min
◦ 86.0 min
◦ 137 min
◦ 222 min
◦ 284 min

Question 2

Nitric oxide gas (NO) reacts with chlorine gas according to the chemical equation given below.
NO +

Cl₂→ NOCl
The following initial rates of reaction have been measured for the given reagent concentrations.

Expt. #	Rate (M/hr)	NO (M)	Cl₂ (M)
1	1.19	0.50	0.50
2	4.79	1.00	0.50
3	9.59	1.00	1.00

Which of the following is the rate law (rate equation) for this reaction?

◦ rate = k[NO]
◦ rate = k[NO][Cl₂]^1/2

◦ rate = k[NO][Cl₂]
◦ rate = k[NO]²[Cl₂]
◦ rate = k[NO]²[Cl₂]²

mllong · **Reply #1 on:** Nov 5, 2023

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