The rate of the reaction A + 3 B → C + 2 D was reported as 2.7 mol dm−3 s−1. State the rates of formation and consumption of the participants.

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 mol L-1 s-1. At what rate is hydrogen consumed?

It has been proposed that the conversion of ozone into O2 proceeds by a two-step mechanism:O3(g)---->O2(g) + O2(g)O3(g) + O(g)----->2 O2(g)(a) Describe the molecularity of each elementary reaction in this mechanism.(b) Write the equation for the overall reaction.(c) Identify the intermediate(s).

In the presence  of excess thiocyanate ion, SCN-, the following reaction is first order in iron(III) ion, Fe3+; the rate constant is (1.47x10^0)/s. Fe3+(aq) + SCN-(aq)  → Fe(SCN)2+(aq). What is the half-life, in seconds, of the reaction? Express your answer to three significant figures.

In a study of the gas phase decomposition of dinitrogen pentoxide at 335 KN2O5(g)2 NO2(g) + ½ O2(g)the concentration of N2O5 was followed as a function of time.It was found that a graph of ln[N2O5] versus time in seconds gave a straight line with a slope of -6.20×10-3 s-1 and a y-intercept of -2.02 .Based on this plot, the reaction is     order in N2O5 and the rate constant for the reaction is s-1.

Give the equation for quantum yield j. rate of formation of the singlet state rate of ith decay mechanism rate of ith decay mechanism rate of removal of the singlet state rate of ith decay mechanism rate of formation of the singlet state rate of removal of the singlet state rate of ith decay mechanism Step 4 of 6 Give the quantum yield ;. (Use the following as necessary: kj, k1, k2, k3, and t.) k1 + k, + k = ki 3 k1 + k2 + k3 Recalling the relationship between the overall rate constant, k, and the mean lifetime, T, give the quantum yield D; in terms of T and Tj. (Use the following as necessary: T and T;) i Step 5 of 6 (c) If T1 = 1×10-7 s, T2 = 4x10-8 s, and T3 = 1x10-8 s, calculate the lifetime of the singlet state and the quantum yield for the path that has T2. (Enter an unrounded value with at least 3 digits.) 1 using the equation given in (b). Calculate = 7.407e-9 s-1 Solve for T, the lifetime of the singlet state. T = .185175 X S Submit

A suggested mechanism for the gas phase decomposition of nitrous oxide is: step 1: NgÐ — Nz + 0 N₂O + O N₂ + O2 step 2: (a) Identify the molecularity of each step in the mechanism. step 1 8 step 2 (b) Write the equation for the net reaction. Use the smallest integer coefficients possible. If a box is not needed, leave it blank. 8 (c) Identify any intemediates and/or catalysts in this mechanism. Catalyst: Enter formula. If none, leave box blank: Intermediate: Enter formula. If none, leave box blank: The following mechanism has been proposed for the gas phase reaction of nitrogen monoxide with bromine. step 1: NO + Br₂ → NOBr₂ NOBr₂ + NO 2 NOBr step 2: (a) Identify the molecularity of each step in the mechanism. step 1 step 2 (b) Write the equation for the net reaction. Use the smallest integer coefficients possible. If a box is not needed, leave it blank. (c) Identify any intermediates and/or catalysts in this mechanism. Catalyst: Enter formula. If none, leave box blank: Intermediate:…

For the reaction of the ammonium ion with nitrous acid, the net reaction is NH4*(aq) + HNO2(aq) → N2(g) + 2H2O() + H*(aq) If the initial concentration of nitrous acid is 1.00 M and, after 28.8 s has elapsed, the concentration of nitrous acid has fallen to 0.82 M, what is the average rate of the reaction over this time interval? 0.0063 M/s 0.028 M/s -0.0063 M/s -0.028 M/s O 0.063 M/s

The mechanism for the reaction described by the equation CH,NC(g) CH, CN(g) is suggested to be k1 (1) A(g) + M(g) = A" (g) + M(g) k-1 k2 * (2) А (g) → B(g) where A(g) is CH, NC(g), M(g) is any gas molecule, A* (g) is CH,NC*(g) (an energized gas molecule), and B(g) is CH,CN(g). Assuming that [A* ] is governed by steady-state conditions, derive the rate law for the production of CH, CN(g) in terms of [A], [M], and the appropriate k values.

In a study of the formation of HI from its elements,H₂(g)+I₂(g)→ 2HI(g) equal amounts of H₂ and I₂ were placed in a container, whichwas then sealed and heated.(a) On one set of axes, sketch concentration vs. time curves for H₂ and HI, and explain how Qchanges as a function of time.(b) Is the value of Qdifferent if [I₂] is plotted instead of [H₂]?