Interpretation: The rate law for the following elementary reaction needs to be determined:
Concept Introduction: An expression used to give the relationship between rate constant and the
Interpretation: The rate law for the following elementary reaction needs to be determined:
Concept Introduction: An expression used to give the relationship between rate constant and the rate of reaction along with the concentrations of the reactants raised to some power which are experimentally determined is known as rate law.
Interpretation: The rate law for the following elementary reaction needs to be determined:
Concept Introduction: An expression used to give the relationship between rate constant and the rate of reaction along with the concentrations of the reactants raised to some power which are experimentally determined is known as rate law.
Interpretation: The rate law for the following elementary reaction needs to be determined:
Concept Introduction: An expression used to give the relationship between rate constant and the rate of reaction along with the concentrations of the reactants raised to some power which are experimentally determined is known as rate law.
Interpretation: The rate law for the following elementary reaction needs to be determined:
Concept Introduction: An expression used to give the relationship between rate constant and the rate of reaction along with the concentrations of the reactants raised to some power which are experimentally determined is known as rate law.
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Chemical Principles
- Ozone, O3, in the Earths upper atmosphere decomposes according to the equation 2 O3(g) 3 O2(g) The mechanism of the reaction is thought to proceed through an initial fast, reversible step followed by a slow, second step. Step 1: Fast, reversible O3(g) O2(g) + O(g) Step 2: Slow O3(g) + O(g) 2 O2(g) (a) Which of the steps is rate-determining? (b) Write the rate equation for the rate-determining steparrow_forwardAt 573 K, gaseous NO2(g) decomposes, forming NO(g) and O2(g). If a vessel containing NO2(g) has an initial concentration of 1.9 102 mol/L, how long will it take for 75% of the NO2(g) to decompose? The decomposition of NO2(g) is second-order in the reactant and the rate constant for this reaction, at 573 K, is 1.1 L/mol s.arrow_forwardWhat is the rate law for each of the following elementary reactions? (a) NO(g) + NO3(g) 2 NO2(g) (b) Cl(g) + H2(g) HCl(g) + H(g) (c) (CH3)3CBr(aq) (CH3)3C+(aq) + Br(aq)arrow_forward
- Given the following reactions and the corresponding rate laws, in which of the reactions might the elementary reaction and the overall reaction be the same? (a) Cl2+COCI2COrate=k[ CI2]3/2[CO] (b) PCI3+CI2PCI5rate=k[PCI3][CI2] (c) 2NO+H2N2+H2Orate=k[NO][H2] (d) 2NO+O22NO2rate=k[NO]2[O2] (e) NO+O3NO2+O2rate=k[NO][O3]arrow_forwardNitrosyl bromide, NOBr, is formed from NO and Br2: 2 NO(g) + Br2(g) 2 NOBr(g) Experiments show that this reaction is second-order in NO and first-order in Br2. (a) Write the rate equation for the reaction. (b) How does the initial reaction rate change if the concentration of Br2 is changed from 0.0022 mol/L to 0.0066 mol/L? (c) What is the change in the initial rate if the concentration of NO is changed from 0.0024 mol/L to 0.0012 mol/L?arrow_forwardWhen enzymes are present at very low concentration, their effect on reaction rate can be described by first-order kinetics. Calculate by what factor the rate of an enzyme-catalyzed reaction changes when the enzyme concentration is changed from 1.5 107 M to 4.5 106 M.arrow_forward
- Write the rate laws for the following elementary reactions. a. CH3NC(g) CH3CN(g) b. O3(g) + NO(g) O2(g) + NO2(g) c. O3(g) O2(g) + O(g) d. O3(g) + O(g) 2O2(g)arrow_forwardGaseous azomethane (CH3N2CH3) decomposes to ethane and nitrogen when heated: CH3N2CH3(g) CH3CH3(g) + N2(g) The decomposition of azomethane is a first-order reaction with k = 3.6 104 s1 at 600 K. (a) A sample of gaseous CH3N2CH3 is placed in a flask and heated at 600 K for 150 seconds. What fraction of the initial sample remains after this time? (b) How long must a sample be heated so that 99% of the sample has decomposed?arrow_forwardThe reaction of CO(g) + NO2(g) is second-order in NO2 and zeroth-order in CO at temperatures less than 500 K. (a) Write the rate law for the reaction. (b) Determine how the reaction rate changes if the NO2 concentration is halved. (c) Determine how the reaction rate changes if the concentration of CO is doubled.arrow_forward
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