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Reaction rate is expressed in terms of changes in the concentration of reactants and products. Write a balanced equation for

Rate=12Δ[N2O5]Δt=14Δ[NO2]Δt=Δ[O2]Δt

Short Answer

Expert verified

The balanced equation is as follows:

2N2O5(g)4NO2(g)+O2(g)

Step by step solution

01

Step 1:What is the reaction rate?

The rate of reaction, also known as the reaction rate, is the rate at which reactants become products. The pace at which a response occurs is an excellent diagnostic tool. We can create strategies to optimize production by learning how quickly items are made and what causes responses to slow down. This data is required for the large-scale production of various chemicals, including fertilizers, medicines, and home cleaning products.

02

Balanced equation

The word in the rate equation with a negative sign denotes reactant, whereas the term with a positive sign denotes product. The inverse of the fraction yields the molecules' stoichiometric coefficients. Write a balanced equation as follows:

2N2O5(g)4NO2(g)+O2(g)

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Most popular questions from this chapter

Question:Many drugs decompose in blood by a first-order process.

(a) Two tablets of aspirin supply 0.60 g of the active compound. After 30 min, this compound reaches a maximum concentration of 2 mg/100 mL of blood. If the half-life for its breakdown is 90 min, what is its concentration (in mg/100 mL) 2.5 h after it reaches its maximum concentration?

(b) For the decomposition of an antibiotic in a person with a normal temperature (98.6°F),k=3.1×10-5s-1; for a person with a fever at 101.9°F, k=3.9×10-5s-1. If the person with the fever must take another pill when of the first pill has decomposed, how many hours should she wait to take a second pill? A third pill? (Assume the pill is effective immediately.)

(c) Calculate Ea for decomposition of the antibiotic in part (b).

Although the depletion of stratospheric ozone threatens life on Earth today, its accumulation was one of the crucial processes that allowed life to develop in prehistoric times:

3O2(g)2O3(g)

(a) Express the reaction rate in terms [O2]and[O3]

(b) At a given instant, the reaction rate in terms of is 2.17105 mol/L s. What is it in terms of[O3]?

Consider the following organic reaction, in which one halogen replaces another in an alkyl halide:

CH3CH2Br+KlCH3CH2l+KBr

In acetone, this particular reaction goes to completion because KI is soluble in acetone but KBr is not. In the mechanism, I approach the carbon opposite to the Br (see Figure 16.19, withl-

instead of OH- ). After Br- has been replaced by l-and precipitates as KBr, other I ions react with the ethyl iodide by the same mechanism.

(a) If we designate the carbon bonded to the halogen as C-1, what are the shapes around C-1 and the hybridization of C-1 in ethyl iodide?

(b) In the transition state, one of the two lobes of the unhybridized 2p orbital of C-1 overlaps a p orbital of I, while the other lobe overlaps a p orbital of Br. What are the shape around C-1 and the hybridization of C-1 in the transition state?

(c) The deuterated reactant, CH3CHDBr(where D is deuterium, 2 H), has two optical isomers because C-1 is chiral. If the reaction is run with one of the isomers, the ethyl iodide is not optically active. Explain

For the decomposition of gaseous dinitrogen pentaoxide, 2N2O5(g)4NO2(g)+O2(g) , the rate constant isk=2.8×10-3s-1 at600C . The initial concentration ofN2O5 is 1.58 mol/L.

(a) What is[N2O5] after 5.00 min?

(b) What fraction of theN2O5 has decomposed after 5.00 min?

Chlorine is commonly used to disinfect drinking water, and the inactivation of pathogens by chlorine follows first-order kinetics. The following data show E. coli inactivation:

Contact time (min)

Percent (%) inactivation

0.00

0.0

0.50

68.3

1.00

90.0

1.50

96.8

2.00

99.0

2.50

99.7

3.00

99.9

(a) Determine the first-order inactivation constant, k. [Hint: % inactivation

=100×(1-AtA0)

(b) How much contact time is required for 95% inactivation?

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