A 132 B 274 C 530 D 765 E 911 79 The for the reaction below is 149 10 8 at 1000

# A 132 b 274 c 530 d 765 e 911 79 the for the reaction

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78) ______ A) 13.2 B) 2.74 C) 5.30 D) 7.65 E) 9.11 79) The for the reaction below is 1.49 ×108at 100.0 °C: CO (g) +(g) (g) In an equilibrium mixture of the three gases, ==2.22 ×10-4atm. The partial pressure of the product, phosgene (), is __________ atm. 79) ______ 80) The initial concentration of reactant in a first-order reaction is 0.27 M. The rate constant for the reaction is What is the concentration (mol/L) of reactant after 80) ______ 81) The isomerization of methylisonitrile to acetonitrile NC (g) CN (g) is first order in NC. The rate constant for the reaction is 9.45 ×10-5at 478 K. The of the reaction when the initial [NC] is 0.030 M is __________ s. 81) ______ 82) Carbon-11 decays by positron emission: C B +e The decay occurs with a release of 2.87 ×J per mole of carbon-11. When 2.00 g of undergoes this radioactive decay, __________ g of mass is converted to energy. 82) ______ A) 5.80 ×10-4B) 5.80 ×10-7C) 1.74 ×105D) 1.72 ×103E) 6.38 ×10-383) Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What percentage of a sample remains after 60.0 min? 83) ______ 84) Consider the following chemical reaction: (g) +(g) 2HI (g) At equilibrium in a particular experiment, the concentrations of , , and HI were and respectively. The value of for this reaction is __________. 84) ______ 85) At 1000.0 K, the equilibrium constant for the reaction 2NO (g) +Br2(g) 2NOBr (g) is Kp=0.017. Calculate Kpfor the reverse reaction, 2NOBr (g) 2NO (g) +Br2 (g). 85) ______ 86) Dinitrogentetraoxide partially decomposes according to the following equilibrium: (g) 2N(g) A 1.00-L flask is charged withof . At equilibrium at 373 K, 0.0055 mol of remains. for this reaction is __________. 86) ______ A) 2.2 ×B) 0.87 C) 13 D) 0.022 E) 0.22 87) The reaction below is first order in []: 2(l) 2O (l) +(g) A solution originally at 0.600 M is found to be 0.075 M after 54 min. The half-life for this reaction is __________ min. 87) ______ 88) If we start with 1.000 g of strontium-90, 0.887 g will remain after 5.00 yr. This means that the of strontium-90 is __________ yr. 88) ______ 89) A first-order reaction has a rate constant of 0.33 . It takes __________ min for the reactant concentration to decrease from 0.13 M to 0.095 M. 89) ______ 90) At 200 °C, the equilibrium constant (Kp) for the reaction below is 2.40 ×103. 2NO (g) N2(g) +O2(g) A closed vessel is charged with 36.1 atm of NO. At equilibrium, the partial pressure of O2is __________ atm. 90) ______ A) 294 B) 35.7 C) 6.00 D) 1.50 ×10-2 E) 17.9 91) The kinetics of the reaction below were studied and it was determined that the reaction rate incr eased by a factor of 9 when the concentration of B was tripled. The reaction is __________ order in B. A +B P  #### You've reached the end of your free preview.

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