Reaction rate is expressed in terms of changes in the concentration of reactants and products. Write a balanced equation forRate=-12N2O5t=14NO2t=O2t

Short Answer

Expert verified

The balanced equation is as follows:

2N2O5g4NO2g+O2g

Step by step solution

01

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:

2N2O5g4NO2g+O2g

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Most popular questions from this chapter

The rate constant of a reaction is 4.50×10-5L/mol.sat 1950cand 3.20×10-3L/mol.s at 2580C . What is the activation energy of the reaction?

Even when a mechanism is consistent with the rate law, later work may show it to be incorrect. For example, the reaction between hydrogen and iodine has this rate law: rate=k[H2][I2] . The long-accepted mechanism had a single bimolecular step; that is, the overall reaction was thought to be elementary:

H2(g)+I2(g)2HI(g)

In the 1960s, however, spectroscopic evidence showed the presence of free I atoms during the reaction. Kineticists have since proposed a three-step mechanism:

(1)I2(g)2I(g)[fast](2)H2(g)+I(g)H2I(g)[fast](3)H2I(g)+I(g)2HI(g)[slow]

Show that this mechanism is consistent with the rate law.

For the reaction , [C] vs. time is plotted:

How do you determine each of the following?

(a) The average rate over the entire experiment

(b) The reaction rate at time x

(c) The initial reaction rate

(d) Would the values in parts (a), (b) and (c) be different if you plotted [D] vs. time? Explain.

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?

What is the central idea of collision theory? How does this idea explain the effect of concentration on reaction rate?

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