please answer 27-33

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please answer 27-33

Please Answer 27 33 1 (22.05 KiB) Viewed 58 times

Please Answer 27 33 2 (19.96 KiB) Viewed 58 times

Please Answer 27 33 3 (27.82 KiB) Viewed 58 times

Please Answer 27 33 4 (24.09 KiB) Viewed 58 times

Question 27 Not yet answered Marked out of 100 What is the reaction order at each temperature? The following data were obtained for the decomposi- tion of nitrogen dioxide. 2NO,(8) — 2NO(g) + O2(g) Pressure of NO, (tor) Time (s) 310 K 315 K 0 1 2 3 24.0 18.1 13.7 10.3 7.8 5.9 4.5 3.4 2.6 1.9 1.5 24.0 15.2 9.7 6.1 3.9 2.5 1.6 1.0 0.6 0.4 0.3 7 8 9 10 Select one or more: O a. Reaction order at 310 K: 0 b. Reaction order at 310 K: 1 c. Reaction order at 310 K: 2 d. Reaction order at 315 K: 0 e. Reaction order at 315 K: 1 Ot Reaction order at 315 K 2 DO Question 28 Not yet answered Marked out of 100 What is the rate constant at 310 K? (Use SI units. For example, use seconds not minutes or hours) Answer:

Question 29 Not yet answered Marked out of 1.00 What is the rate constant at 315K? Answer: Question 30 Not yet answered Marked out of 1.00 What is the activation energy (in J/mol)? Answer:

Question 31 Not yet answered Marked out of 1.00 When formic acid is heated, it decomposes to hydrogen and carbon dioxide in a first-order decay: HCOOH(g) →CO2(g) + H2 (9) The rate of reaction is monitored by measuring the total pressure in the reaction container. Time (s). P (torr) 0......... 220 50 324 100 379 150 408 200 423 250 431 300 ....... 435 At the start of the reaction (time = 0), only formic acid is present. What is the formic acid pressure (in torr) when the total pressure is 288? Hint: use Dalton's law of partial pressure and the reaction stoichiometry. Answer:

Question 32 Not yet answered Marked out of 1.00 What is the rate constant (in s-")? (To determine the rate, you must use a reactant concentration or pressure. Use the procedure of in the previous question to determine the HCOOH pressure as a function of the total pressure.) Answer: Question 33 Not yet answered Marked out of 1.00 What is the half-life (in s)? Answer: