* 00 < CO T R Potential energy 25 kJ/mol 20 kJ/ma 15 k)/mol 5 kJ/mol -10 kJ/mol -15 k]/mol. Reaction progress Reaction progress Reaction progress Which of these has the lowest activation energy? (1, MacBook Pro esc %23 $ 6. 4. 5. 3. E.
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which of these has the lowest activation energy? 1,2, or 3 and why?
![* 00
< CO
T
R
Potential energy
25 kJ/mol
20 kJ/ma
15 k)/mol
5 kJ/mol
-10 kJ/mol
-15 k]/mol.
Reaction progress
Reaction progress
Reaction progress
Which of these has the lowest activation energy? (1,
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- A reaction profile (not to scale!) for the reaction CH4 + HCIC,H;Cl is shown below: E (kJ) 205 C2H4 + HCI 70 C2HSCI Reaction Coordinate Which of the following are true? Choose ail that apply. O AE is positive. | The energy of the products is lower than the energy of the reactants. | The value of Ea in the presence of a catalyst would be larger than 205 kJ. | The magnitude of Ea for the reverse reaction is larger than 205 kJ. O The value of AE in the presence of a catalyst would be smaller than -70.0kJWhich one of the potential energy diagrams below represent endothermic reactiore (K:1) Select one: Erev) The activati E(fwd), direction, E between the PE (kJ) Product transition st diagram. TH A+B Reaction progress reverse reac difference b and transitic two of the graphs represent endothermic reactions diagram PE (kJ) Product Reactant Reaction progress Efwd) E(rev) Reactaut Product Reaction progress PE E. (kJ) Reactant Product Reaction progressWondershare PDFelement Pro 檔案 編輯 檢視 工具 前往 窗口 說明 70% [4) A АВС 週五下午8:31 3. The following diagram shows an energy profile for an uncatalysed reaction. EXLSX pject3 If reactant products Reaction coordinate Mini Project (Crime Situation) (a) Referring to the energy profile, state whether the reaction is exothermic or endothermic. Explain briefly. (b)(i) In the above diagram, draw a labelled energy profile for the catalysed reaction. (ii) Hence, explain why the catalyst can speed up the reaction. PAGES Energy
- 1. HBr +O2 →HOOBF 2(g) (slow) 2. НООBr + HBr, (8) 2HOB" 2g) (fast) 3. 2{НОBr + HBr, T →H,O« +Br} (fast) (8) (g) 2(g) 4HB +0,→2H,O, +2Br%e - (3) Consider the above reaction mechanism. The rate-law equation from this reaction would be - K[HOB1]*[HBr] K[HBr]*[O,] = k[HOB1]² r = k[HBr]'[O,]' а. r = d. = b. e. impossible to tell from this information r = с.Consider the gas-phase reaction of nitric oxide with hydrogen at 1280°C 2NO(g) + 2H2(g) →N2(g) + 2H20(g) Experiment [NO](M) 5.00 x 10-3 1.00 x 10-2 1.00 x 10-2 [H2](M) 2.00 x 10-3 2.00 x 10-3 4.00 x 10-3 Initial Rate (M/s) 1.25 x 10-5 5.00 x 10-5 1.00 x 104 Determine the a. the rate law b. overall reaction order C. the rate constant, k. 1235/5/21 1) Energy content of the reactants? 250 2) Energy content of the products? 3) Energy content of the activated complex? 4) Endothermic or exothermic? 200 PE 150 (kJ) 100 5) Energy content of the reactants is (greater or less) than the products? 50 Reaction pathway 中 Q
- ⠀⠀ M Apple Google Disney ESPN Yahoo! Consider the reaction CO(g) + Cl₂(g) →→→COCI₂(g) ANSWER: Submit Answer kJ/mol Biomedical Careers Program Apple iCloud ☆ B prod03-cnow-owl.cengagenow.com Try Another Version Yahoo G G D2L Images Bing Google Wikipedia Facebook Twitter LinkedIn The Weather Channel Yelp TripAdvisor ☆ C S b b C G 凶 Using the standard thermodynamic data in the tables linked above, calculate AGxn for this reaction at 298.15K if the pressure of each gas is 10.91 mm Hg. D2L 1 item attempt remaining COWLv2 |... [References] Use the References to access important values if needed for this question. C + 88 MA reaction profile (not to scale!) for the reaction C2H5CIC,H4 + HCI is shown below: E (kJ) 275 C2H4 + HCI 70 C2HSCI Reaction Coordinate Which of the following are true? Choose all that apply. O The reaction is endothermic. O AE is negative. O The energy of the products is higher than the energy of the reactants. The value of delta E in the presence of a catalyst would be smaller than 70.0 kJ. O The value of Ea in the presence of a catalyst would be lower than 275 kJ.Use arrows (up / down) to indicate the affect of each of these disturbances (stresses) on the concentration of the reactants and products in this equilibrium: 9 KJ + 2 S02 9) + 02 (9) = 2 S03 (9A disturbance affect on affect on affect on ISO2] [02] ISO3] decrease [SO2] increase [02] increase [SO3] increase pressure decrease temp Period 4 CHE
- For the following reactions, the AH' rxn is not equal to AHf for the product except for A) 2CO (g) + O2 (g)-2CO2 (8) B) CH4 (g) + 2Cl2 (g) - CH2Cl2 (1) + 2HCl (g) C) C (diamond) + O2 (g) - CO2 (g) D) N2 (g) + 03 (8) - N2O3 (g) E) Xe (g) + 2F2 (g) - XeF4 (g)FOR THE REACTION CH4 (G) + 2 O2 (G) <- -> CO2 (G) + 2 H2O (L) SHOW W ARROW HOW TO REDUCE THE FOLLOWING STRESSES TO THE REACTION (A) DECREASE THE TOTAL VOLUME OF THE SYSTEM (B) ADDITIONAL O2(G) IS ADDED TO THE SYSTEMActivated complex 400 (b) 300 Products Potential Energy (a) 200 (c) 100 Reactants Reaction Pathway Activated complex 400 (b) 300 Products Potential Energy (a) 200 (c) 100 Reactants Reaction Pathway Alex thinks that the graph above represents an exothermic reaction and the AH = +400kJ and energy will be released in this reaction. Is Alex correct? If not, find his error and then correct it with explanation. %3D