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if the rate of disapearance of h2o2 is 0.033ms ^-1 what is the rate of appearance of o2? 2h2O2 = 2h2o + o2
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- The equation for the iodination of acetone in acidic solution isCH3 COCH3(aq) + I2(aq) → CH3 COCH2(aq) + H+(aq) + I- (aq) The rate of the reaction is found to be dependent not only on the concentration of the reactants but also on the hydrogen ion centration. Hence the rate expression of this reaction is: rate = k [CH3COCH3]m [I2 ]n [H+]p The rate is obtained by the following the disappearance of iodine using starch as an indicator. The following data are obtained: [CH3COCH3] [H+] [I2] Initial Rate (mol/L.s) 0.80 0.20 0.001 4.2 x 10-6 1.6 0.20 0.001 8.2 x 10-6 0.80 0.40 0.001 8.7 x 10-6 0.80 0.20 0.0005 4.3 x 10-6 1. What is the order of the reaction with respect to each reactant? 2. Write the rate expression for the reaction.3. Calculate, K4. What is the rate of the reaction when [H+]= 0.933 M and [CH3COCH3]= 3[H+]= 10[I-] ?Under certain conditions, the reaction 3 A+ 4B 5C is observed to proceed at a rate of 0.0275 M s ¹. What is the corresponding rate of change in product C?In general, to calculate the rate constant for a second order reaction with respect to A, given an Initlal and final concentration as well as the time required for this change, which equatlon should be used? Multiple Cholce Rate = (A] [A- -kt • [Alo In(AMAlo) -- kt MAt - kt + 1Alo 12 In2k
- The decomposition of gaseous ozone 2 03→302 exhibits a rate law given by -d[O3]/ dt=k[O3P /[O2] | Show that this rate law follows from the mechanism O, k2 (1) (2) O, +0 >20, On the supposition that k > k. What is the resulting expression for k?(1) The gas phase decomposition of dinitrogen pentoxide at 335 KN2O5(g)2 NO2(g) + ½ O2(g)is first order in N2O5 with a rate constant of 4.70×10-3 s-1.If the initial concentration of N2O5 is 3.97×10-2 M, the concentration of N2O5 will be 8.22×10-3 M after ______s have passed. (1b) The gas phase decomposition of sulfuryl chloride at 600 K SO2Cl2(g) SO2(g) + Cl2(g) is first order in SO2Cl2 with a rate constant of 2.80×10-3 min-1. If the initial concentration of SO2Cl2 is 4.90×10-3 M, the concentration of SO2Cl2 will be M after ______ 499 min have passed.The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 x 103M-1s-1and an overall dissociation constant, Kd, of 10 nM. Calculate the dissociation rate, kd, including appropriate units.
- The reaction mechanismA2 = A+A (fast)A+ B → P (slow)involves an intermediate A. Deduce the rate law for the formation of P.for 17. The life time of a state that gives rise to a spectral line of width 0.1 cm¬1 is : (В) 53 pm (A) 53 nm (D) 33 pm (C) 33 nmRate law experiments don’t always give data in the form of a rate in molesper second. Some of them give an amount of time necessary for areaction to proceed to a given point. The faster the rate, the less timenecessary. For the following data, assume that the time recorded for eachexperiment is the time required to consume 0.10 M of A in a hypotheticalreaction A + B yields C Time taken (s) [A]0 [B]0 36.8 0.20 0.40 25.0 0.20 0.60 10.0 0.50 0.60 Determine the rate law and the rate constant for the reaction
- 1 Rate constants for the first-order decomposition of acetonedicarboxylic acid CO(CH2COOH)2(aq) → CO(CH3)2(aq) + 2 CO2(g) acetonedicarboxylic acidacetone are k = 4.75 ×10–4 s–1 at 293 K and k = 1.63 ×10–3 at 303 K. What is the activation energy, Ea, for this reaction? Select one: a. 71KJ/mol b. 81KJ/mol c. 51KJ/mol d. 91kJ/molIn aqueous solution buffered at a pH of 6.75 Penicillin G (molecular weight of 334.39 g/mole) undergoes hydrolysis via a pseudo first order reaction that has an activation energy of 77.3 kJ/mole and a pseudo first order rate constant of 1.58 x 10-7 s-1 at 30°C. The solubility of the sodium salt of Penicillin G is 25 mg/ml of water. One would expect the solubility of the sodium salt to be ____________ that of the Penicillin G. a. higher than b. the same as c. lower than(a) What is the rate equation for the elementary termolecular reaction 2 A + B → products? (Rate expressions take the general form: rate = k . [A]a . [B]b.) (b) What is the rate equation for the elementary bimolecular reaction A + B → products?