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- Determine the rate order of the reaction and its rate constantAt a given temperature, a reaction has a rate constant of 5.83 x 10 -5 s -1. If the starting concentration is 2.65 Molar, the initial instantaneous rate will be At a given temperature, a reaction has a rate constant of 5.83 x 10 -5 s -1. If the starting concentration is 2.65 Molar, the initial instantaneous rate will be 6.91 x 10 -7 M/s 2.00 M/s 4.28 x 10 -1 M/s 0.962 M/s 7.15 x 10 -1 M/s 8.93 x 10 -3 M/s 1.54 x 10 -4 M/s 1.56 M/sHCl reacts with CH3CHCH2 in the gas phase according to the following chemical equation: HC(g) +CH;CHCH2(g) → CH;CHCICH3(g) It is observed that, when the concentration of CH3CHCH, is reduced to 1/2 of its initial value, the rate of the reaction is also reduced to 1/2 of its initial value. When the concentration of HCl is multiplied by 4.18, the rate of the reaction increases by a factor of 73.0. (a) Write the rate expression for this reaction, and give the units of the rate constant k, assuming concentration is expressed as M and time is in seconds. rate = k units = (b) If [HC1] were multiplied by 4.06 and [CH3CHCH2] by 3.98, what change in the rate would be observed? The rate would increase by a factor of |
- From the data given below the value of the rate constant with correct units willbe which one of the best options below? [NO]i [O2]i Initial Rate (M/s)Reaction: 2 NO(g) + O2(g) 2NO2(g) 0.350 M 0.400 M 3.6 x 10^-30.175 M 0.400 M 9.2 x 10^-40.175 M 0.200 M 9.1 x 10^-41. write a basic form of the rate law for the following reaction. NO-3 + 3I- + 2H+ ------> NO-2 + I-3 + H2O 2. if doubling the concentration of nitrate ion in the reaction above causes the rate of reaction to quadruple, what is the order of reaction with respect to nitrate ion?AMoving to another questioit estion 19 The reaction CH3NC - CH3CN is called an isomerization reaction and involves the breaking of a C-N bond and subsequent formation of a C-C bond. The reactant and product have the same molecular formulas and so are isomers. This reaction has a rate constant of 0,111 s at a specific temperature. What is the concentration of CH3NC after 18.9 seconds if its initial concentration is 1.557 M? (the answer should be entered with 3 significant figures; do not enter units; give answer in scientific notation-valid notation examples include 1.23e-8 and 1.23e8 and-1.23e-4 and 1.23e0) K Question 19 of 29 AMoving to another question will save this response. 40-9 ese %23 & delete 4. 5 6 7 E Р R T Y enter A S D F K G J retu Z X alt option ommand command option
- 1. In the reaction below, chlorine dioxide (CIO2), a reddish-yellow gas that is soluble in water, yields CIO; and CIO2- ions in a basic solution. In a series of experiments, the following initial rates of disappearance of CIO2 and OH- were obtained. What is the value of the rate constant? 2CIO2 (aq) + 2OH-(aq) → CIO3- (aq) + CIO2- (aq) + H20 Initial concentrations CIO2- CIO2 OH- Initial Rate Exp 1 0.680M 0.256 M 4.0772 M/s Exp 2 0.227 M 0.256 M 0.1506 M/s Exp 3 0.227 M 0.767 M 0.1517 M/sThe decomposition of ozone is believed to occur in two steps: O3 ® O2 + O O3 + O ® 2O2 Identify any reaction intermediate, what is the overall reaction?An energy diagram showing two peaks suggests that there are two steps and three transition states in the reaction mechanism. Select one: O True O False Given a reaction with an activation energy of 2.3 x 104 J/mol. The rate constant will increase by a factor of when the reaction temperature is increased from 200 °C to 250 °C. O 2.42 O 2.81 O 1.58 O 1.75 For the complete neutralization reaction between a 1 M strong acid and a 1 M strong base of equal initial volumes that is marked by a temperature rise, the entropy of neutralization is positive (ASn > 0) whereas the Gibbs free energy is negative (AGxn < 0). Select one: O True O False
- Some measurements of the initial rate of a certain reaction are given in the table below. [N-] N2 H2 initial rate of reaction 1.27M 0.589М 22.0M/s 1.27 M |0.149 М 5.57 M/s 0.445 M 0.589M 2.70M/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 3 significant digits. Also be sure your answer has the correct unit symbol. rate = k |I| х10 k =A chemistry graduate student is studying the rate of this reaction: 2C1₂O5 (g) → 2Cl₂ (g) +50₂ (g) He fills a reaction vessel with C1₂05 and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 [C₁₂05] 0.600M 0.215M 0.20 00. 0.131M 0.30 0.0941 M 0.40 0.0734M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate k = - k 0 ☐x10 X Ś6. Describe the difference between the rate constant and the rate of a reaction7. What is the order of the following reaction?4Au + O 2 + 2H 2 O 8 CN → 4Au(CN) 2 + 4OH
