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- Which energy diagram best matches the proposed mechanism for this endothermic reaction? E + S 2 ES (fast) E + SE + P (slow) Reaction Progress En orgyно HO HO HO 0 + ½ O, → + H,0 H H но OH ascorbic acid dehydroascorbic acid Vitamin C is oxidized slowly to dehydroascorbic acid by the oxygen in air. It is catalyzed by ions such as Cu*2 and Fe*3. The reaction can be followed by measuring the ultraviolet absorbance at 243 nm. Time (hours) Absorbance (A) 1/A In A - In A 0.75 1.3 -0.29 0.29 1 0.38 2.6 -0.97 0.97 2 0.19 5.3 - 1.7 1.7 3 0.095 11 - 2.4 2.4 29. What is the hybridization of carbon 1 (far left) and carbon 2 (middle) in this hydrocarbon: CH3CH=CH2? (A) sp³, sp (B) sp?, sp? (C) sp³, sp? (D) sp, sp?A 10-mm cube of copper metal is placed in 250 mL of 12 M nitric acid at 25°C and the reaction below occurs: Cu(s) + 4H+(aq) + 2NO3(aq) → Cu2+(aq) +2NO2(g) + 2H20(I) At a particular instant in time, nitrogen dioxide is being produced at the rate of 2.3 × 10^-4 M/min. AT this same instant, what is the rate at which hydrogen ions are being consumed in M/min? Report you answer with 5 places past the decimal
- Problem 4: Using the information below. Answer the given questions accordingly. The decomposition of Nitrogen dioxide to Nitric oxide & Oxygen gas has occured. The rate of disappearance of Nitrogen dioxide is found to be - 4.2 x 105 M/sec.Here is a graph of the pressure of ethylene (C₂H₂) in a reaction vessel during a certain chemical reaction. Use this graph to answer the questions in the table below. atm 30- 25- 20.870 15- 10+ 5+ 50 100 150 seconds Is C₂H4 being created or destroyed by the chemical reaction? If C₂H4 is being created or destroyed, what is the rate at which it is being created or destroyed 100 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If C₂H4 is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 100 seconds of the reaction? 200 Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. 250 created destroyed 300 neither created nor destroyed 0 X 00 0.0 ŚThe data below were determined for the reaction shown below. S20g²(aq) + 31(aq) → SO,2(aq) + 3(aq) [S2O82] 0.038 M Rate 1.4 x 10-5 2.8 x 10-5 0.060 M 0.076 M 0.060 M 0.114 M 0.060 M 4.2 x 10-5 5.6 x 10-5 7.0 x 10-5 0.152 M 0.060 M 0.19 M 0.060 M Calculate the order of reaction with respect to S20g². A 1 C) 1.5 B
- Particles can collide in any formation and a bond will be formed if the particles speed is high True O False( the reaction 2 HgO(s)--> 2 Hg(1) + O2(g) we measure the evolution of gas to determine the rate of reaction. At the beginning of the reaction (at 0 minutes), 0.020 L of O2 is present. After 15 minutes the volume of O2 is 0.35 L. What is the rate of reaction in L/min? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial E X² X₂ ¶ ¶< - + ABC V 10pt V √ TT V " Ω E E 88 AV AV Ix I B F % 0 医用图图 Ť0) Ⓒ Q Save Answer ... KyA substance containing dye decomposes very quickly. The graphs below were constructed with data pertaining to changes in [dye] over time. The initial concentration of dye was 1.0 M. After 20 seconds passed the concentration of dye was measured to be 0.13 M. [Dye] (mM) 10 00 0.9 -0.5 0.8 0.7 0.6 0.5 0.4 In([Dye]) In(mM) 6 -1 -1.5 1/[Dye] (1/mM) m 0.3 -2 2 0.2 0.1 -2.5 0 10 20 0 10 20 10 20 time (sec) time (sec) time (sec) 1. What is the order for the overall reaction? Justify your answer. Your answer *
- Consider the reaction: H2 (g) +I2 (g) → 2 HI (g) A chemist performed an experiment and monitored the concentration of I2 during the course of the reaction. The red line in the graph below represents the results obtained. Which line in the plot would best represent how the concentration of HI changes during the course of the reaction? Time (s) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a a b b d d е е Concentration (M)Question 23 Identify the rate-determining step based on the rate law you found in question 23. Given these data for the acid-catalyzed reaction in question 22, fınd the rate law. 0–H [RCOOH], M [R'OH], M (HA], M Initial Rate, Ml·min' || R-c-o–H 0.35 0.35 0.50 4.60 0.50 + HA - R-Ć+ k2 0.62 0.35 8.14 A- 0.35 0.81 0.50 10.6 0.35 0.50 0.75 9.84 0–H Group 1 Rate = k[RCOOH][R'OH] 0–H 0–H k3 O Rate = k[RCOOH][R'OH][HA] R-C+ A + R -0–H R—С—0—Н Rate = k[RCOOR']/{[RCOOH][R'OH]} k4 0–H R'-o+ A- Rate = k[R'OH] Group 2 H Rate = k[RCOOH] 0–H k5 R—С—0—н R-C-0–R' + H2O + HA R-o+ A- Group 3 H. Step 2 or Step 3 Step 1 or Step 2 Step 1 or Step 3 Step 2 Step 1Thiosulfate ions are oxidized by iodine according to the reaction below:2 S2O 33- (aq) + I2 (aq) → S 4O 62- (aq) + 2I -(aq)If 0.0080 mol of S2 O32- is consumed in 1.0 L of solution every second, what isconsumption rate of iodine?