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- Go to the PhET Reactions and change to Angled shot to see the difference. (a) What happens when the angle of the collision is changed? (b) Explain how this is relevant to rate of reaction.In the PhET Reactions under Options. (a) Leave the Initial Temperature at the default setting. Observe the reaction. Is the rate of reaction fast or slow? (b) Click Pause" and then Reset All, and then enter 15 molecules of A and 10 molecules of BC once again. Select Show Bonds" under Options. This time, increase the initial temperature until, on the graph, the total average energy line is completely above the potential energy curve. Describe what happens to the reaction.The label on a bottle of 3% (by volume) hydrogen peroxide, H2O2, purchased at a grocery store, states that the solution should be stored in a cool, dark place. H2O2decomposes slowly over time, and the rate of decomposition increases with an increase in temperature and in the presence of light. However, the rate of decomposition increases dramatically if a small amount of powdered MnO- is added to the solution. The decomposition products are H2O and O2. MnO2 is not consumed in the reaction. Write the equation for the decomposition of H2O2. What role does MnO2 play? In the chemistry lab, a student substituted a chunk of MnO2 for the powdered compound. The reaction rate was not appreciably increased. WTiat is one possible explanation for this observation? Is MnO2 part of the stoichiometry of the decomposition of H2O2?
- When fitting data to a best fit line, a correlation coefficient (R2) is determined and used to evaluate the quality of fit. The best fit of the data will have an R² value closest or equal to zero (0). closest or equal to one (1). equal to the rate of the reaction occurring. equal to the rate constant of the reaction occurring.2:10 1 4 7 +/- 2 5 8 Question 1 of 15 The reaction A + 2B → C has the rate law rate = K[A] [B]. By what factor does the rate of reaction increase when both [A] and [B] are doubled? . 3 60 9 O 5GW Tap here or pull up for additional resources Submit XU x 100Be sure to answer all parts. For the following general reaction, rate -AJAJ and k-1.3 x 102 M.s. A+B 2C Use this information to fill in the missing table entries. Experiment JA] (M) BỊ (M) Initial rate (Mis) 1 0.013 0.250 2.20 x 10 2 0.026 0.250 3 0.500 2.20 x 10 1) Initial reaction rate in experiment 2: <10 M/s (Enter your answer in scientific notation.) 2) Initial concentration of A in experiment 3:
- H, (g) +1, (g) → 2 HI (g) A student conducts a series of experiments involving the reaction of H2 (g) with I, (g). Particle representations of three different reaction conditions in containers of equal volume are shown. Drag each rate description (Fastest Rate, Intermediate Rate, Slowest particle representation. Figure 1 Figure 2 Figure 3 00 = 12 00 = H, 25°C 100°C 100°C Figure 1 Figure 2 Figure 3 : Fastest Rate : Intermediate Rate : Slowest RateSecond Year Second Semester 2018-2019 First Month Exam School of Chemistry Organic Chemistry QI/ Consider the following reaction: "OCICH,, Br (CH,,COH ン しい」 What happens to the reaction rate guh each of the following changes? is (1) The concentration of OC(CH is decreased.(2) The base is changed to "OH. (3) The halide is changed to CH;CH:CH2CH,CH(Br)CH3. (4) The leaving group is changed to I.Which one of the following units would not be an acceptable way to express reaction rate? OM/S OM-min-1 OL-mol-¹-5-1 O mol-L-1-5-1
- 5.0 mL of reactant A (0.10 M) was added to 5.0 mL of reactant B(0.25 M).The reaction was monitored until all of A was consumed, according to the reaction A + 2B→C. The measured reaction time was 51 seconds. What is the rate of this reaction? ______ x 10 _____ M/sBe sure to answer all parts. By what factor does the rate shown below change if each of the following changes occurs: Rate = k[BrO, ][Br ][*] If BrO, is doubled, the rate (select) by a factor of If [Br] is halved, the rate (select) by a factor of If H* | is quadrupled, the rate (select) v by a factor ofSHOW ALL WORK ONA SEPARATE SHEET. PUT A BOX AROUND EACH ANSWER. UPLOAD YOUR FILE TO THIS QUESTION. The following initial rate data apply to the reaction below. A + 2B C + 2D Exp # [A] (M) [B] (M) Initial Rate (M/s) 3.3 x 103 9.9 x 10 3 3.3 x 103 1 0.24 0.020 0.72 0.020 3 0.24 0.040 1. Write the rate expression in terms of disappearance of reactants and appearance of products. 2. If the rate of disappearance of B = 0.16 M/min at a particular moment, what is the rate of appearance of C at that moment? 3. Determine the rate law for this reaction 4. What is the rate constant for this reaction? 5. What is the rate when [A] = [B] = 0.12 M %3D %3D