QUESTION 1 What is the rate of formation of Br 2, if the rate of consumption of bromide is 1.569x10-6 M/s? 5 Br(aq) + BrO 3 ¯(aq) + 6 H *(aq) → 3 Br 2(aq) + 3 H 20 (1) Key concept: Rates of reaction of reactants and/or products are related to the stoichiometry. For aA + bB → CC -- RB=RA*b/a= RC*b/c
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- 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?The rate of the decomposition of hydrogen peroxide, H2O2, depends on the concentration of iodide ion present. The rate of decomposition was measured at constant temperature and pressure for various concentrations of H2O2and of KI. The data appear below. Determine the order of reaction for each substance, write the rate law, and evaluate the rate constant. Rate [H2OJ [Kll (mL min-’) (mol L ’) (mol L ’) 0.090 0.15 0.033 0.178 0.30 0.033 0.184 0.15 0.066Propane combustion results in the production of carbon dioxide and water vapor according to the following balanced chemical equation: C3H8 (g) + 5 O2 (g) --> 3 CO2 (g) + 4 H2O (g) If the concentration of carbon dioxide increases from 0.773 M to 0.961 M in the first 17.2 seconds, what is the rate of reaction (in M/s)? (answer in 3 significant figures)
- Consider the reaction: 4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(l) If the rate of formation of N2 is 0.20 Ms-1 at a particular time, what is the rate of disappearance of O2 in molar per second? please break down math.What is the correct formula for the rate of disappearance of [AX₂]? [AX₂] as a reactant.Which of the following are valid expressions for the rate of the reaction below? S2O82− (aq) + 3 I− (aq) → 2 SO42− (aq) + I3− (aq) Group of answer choices −Δ[S2O82− ]/ Δt +Δ[I3− ]/ Δt +Δ[SO42− ]/ Δt −Δ[I− ]/ Δt
- For the following reaction, if O^2 is used up at a rate of 5.02M/hr, what is the rate of consumption of CH^3OH? 2CH^3OH+3O^2→2CO^2+4H^2O using three significant figures. ALL EXPONENTS ARE AT THE BOTTOMThe rate of decomposition of N2O5 in the reaction 2 N2O5 (g) → 4 NO2 (g) + 5 O2 (g) at a particular instant is 4.2 x 10-7 M/s, what is the rate of appearance of O2? When submitting answers in scientific notation, please use E to represent "x10". An example would be 4.1 x 10-2, this would be counted correct as 4.1E-2.The synthesis of ammonia obeys the following reaction: N2(g) + 3H2(g) → 2 NH3(g) N2(g) concentration measurements were taken at different times and plotted. 1) What is the average reaction rate of NH3(g) between 0 and 3 hours? (Attention, the graph is in "hour" and we want a speed in "mole/L s") 2) What is the instantaneous rate of reaction of NH3(g) at the 1st hour? 3) What is the general speed between 0 and 3 hours?
- For the gas phase decomposition of hydrogen peroxide at 400 °C2 H2O22 H2O + O2the average rate of disappearance of H2O2 over the time period from t = 0 s to t = 7 s is found to be 1.61×10-2 M s-1.The average rate of formation of O2 over the same time period is ? (answer in M s-1.)Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO2(aq) + 2OH–(aq) → ClO2–(aq) + ClO3–(aq) + H2O A kinetic study of this reaction under a certain set of conditions yielded the data below. Experiment [ClO2] (M) [OH-] (M) Rate (M/s) 1 0.0500 0.100 5.75 x 10-2 2 0.100 0.100 2.30 x 10-1 3 0.100 0.0500 1.15 x 10-1 What is the rate law?The average rate of disappearance of ozone in the reaction 2O3(g) → 3O2(g) is found to be 8.8 × 10–3 atm over a certain interval of time. What is the rate of appearance of O2 during this interval? Question 2 options: A) 5.9 × 10–3 atm/time B) 2.6 × 10–2 atm/time C) 1.8 × 10–2 atm/time D) 1.3 × 10–2 atm/time E) 8.8 × 10–3 atm/time