- Engineering Chemistry 1b 6 Abcden C E A B C D E 8 A B C D E 9 Abcde A Reaction No G Co G No G C 1 (100.71 KiB) Viewed 29 times
ENGINEERING CHEMISTRY 1B 6. ABCDEN C. E. A. B. C. D. E. 8. A. B. C. D. E. 9. ABCDE A reaction NO₂(g) + CO(g) → NO(g) + CO₂(g) obeys the following rate law: Rate = K[NO₂]². 2.40 minutes 7.82 minutes 3.32 minutes 1.60 minutes 3.21 minutes CETM1B1 The rate constant for this reaction at 66.0°C is 0.00482 M-¹.s-¹. Suppose a reaction is started with 0.442 mol of NO₂ and 0.884 mol of CO in a volume of 425 cm³. The half life for the reaction is: 3.33 x 10-³ M.s-1 9.99 x 10-3 M.s-¹ 1.11 x 10-³ M.s-1 5.00 x 10-3 M.s-1 2.22 x 10-3 M.s-¹ Consider the formation of ammonia (NH3): N₂(g) + 3H₂(g) →→ 2NH3(g) If the rate of appearance of NH3 at a particular instant in a reaction vessel is 3.33 x 10-³ M.s-1, what is the rate of disappearance of H₂? 2018 Which one of the following statements is correct? A catalyst that is present in the same phase as the reacting molecules is a heterogeneous catalyst. Elementary steps involving the simultaneous collision of two molecules are bimolecular. Absorption refers to the binding of molecules to a surface. Because the fast step limits the overall reaction rate, it is called the rate- determining step. A balanced chemical equation details the individual steps that occur in the course of a reaction. For the reaction 2AB (g) = 2A(g) + C2(g), Kc = 5.18 x 10-5. What will happen when 9.44 mol of AB(g), 0.452 mol of A(g) and 0.452 mol C₂(g) are added to a 20.0 dm³ container and allowed to equilibrate? A. B. More A₂C will be formed. The amount of A₂C will be halved. C. More A₂ will be formed than C2. D. More C₂ will be formed than A2. E. The amounts of A2 and C2 stay the same. -3-