6. A student is performs the reaction below in three experiments studying initial concentrations and initial rates. The data is summarized in the table below. 2C10220HClO3 + CO2 + H₂O Experiment [ClO2] mol/L [OH] mol/L Rate (mol/L.s) 1 8.0 x 102 3.60 x 10 3.71 x 102 2 8.0 x 102 1.20 x 10 4.12 x 10 3 1.60 x 10-¹ 1.20 x 10 8.24 x 10-3 a. What is the order of this reaction with respect to CIO₂? b. What is the order of this reaction with respect to OH ? c. What is the overall order of this reaction? d. What is the rate law constant, k, for this reaction? (Be sure to include the value and the units.)

. What does the activation energy for a reaction represent? How is the activation energy related to whether a collision between molecules is successful?

Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?

For a first order gas phase reaction A products, k = 7.2 104s1 at 660. K and k = 1.7 102s1 at 720. K. If the initial pressure of A is 536 torr at 295C, how long will it take for the pressure of A to decrease to 268 torr?

Consider the following statements: In general, the rate of a chemical reaction increases a bit at first because it takes a while for the reaction to get warmed up. After that, however, the rate of the reaction decreases because its rate is dependent on the concentrations of the reactants, and these are decreasing. Indicate everything that is correct in these statements, and indicate everything that is incorrect. Correct the incorrect statements and explain.

Determine rxnH 25 C for the following reaction: NO g O2 g NO2 g This reaction is a major participant in the formation of smog.

A reaction is started by mixing reactants. As time passes, the rate decreases. Explain this behavior that is characteristic of most reactions.

. Account for the increase in reaction rate brought about by a catalyst.

The reaction for the Haber process, the industrial production of ammonia, is N2(g)+3H2(g)2NH3(g) Assume that under certain laboratory conditions ammonia is produced at the rate of 6.29 ×10-5 molL-1s-1. At what rate is nitrogen consumed? At what rate is hydrogen consumed?

The reaction NO(g)+O3NO2(g)+O2(g) was studied by performing two experiments. In the first experiment the rate of disappearance of NO was followed in the presence of a large excess of O3. The results were as follows ([O3] remains effectively constant at 1.0 1014 molecules/cm3): Time(ms) [NO] (molecules/cm3) 0 6.0 108 100 1 5.0 108 500 1 2.4 108 700 1 1.7 108 1000 1 9.9 107 In the second experiment [NO] was held constant at2.0 1014 molecules/cm3. The data for the disappearance of O3 are as follows: Time(ms) [O3] (molecules/cm3) 0 1.0 1010 50 1 8.4 109 100 1 7.0 109 200 1 4.9 109 300 1 3.4 109 a. What is the order with respect to each reactant? b. What is the overall rate law? c. What is the value of the rate constant from each set of experiments? Rate=k[NO]xRate=k[O3]y d. What is the value of the rate constant for the overall rate law? Rate=k[NO]x[O3]y