09:14Introduction to reaction rates | Kinetics | AP Chemistry | Khan AcademyKhan Academy Organic Chemistry562views
Multiple ChoiceConsider the following reaction:2 H2O2 (aq) → 2 H2O (l) + O2 (g)Calculate the rate of the reaction between 25 sec and 65 sec.1538views14rank3commentsHas a video solution.
Multiple ChoiceThe rate of consumption of C3H6 in the following reaction is 0.45 M/s. Calculate the rate of production of H2O. 2 C3H6 + 2 NH3 + 3 O2 → 2 CH2CHCN + 6 H2O203views
Textbook QuestionUse the following equation and graph to answer questions 1 and 2. Hydrogen iodide decomposes at 410 °C, according the reaction: 2 HI1g2¡H21g2 + I21g2 The graph shows how the concentration of HI changes over time. What is the average rate of loss of HI over the time period 0–40 s (LO 14.1) (a) 7.5 * 10-3 M>s (b) 4.8 * 10-3 M>s (c) 3.0 * 10-2 M>s (d) 3.5 * 10-3 M>s573viewsHas a video solution.
Textbook QuestionYou study the rate of a reaction, measuring both the concentration of the reactant and the concentration of the product as a function of time, and obtain the following results: Which chemical equation is consistent with these data: (i) A → B, (ii) B → A, (iii) A → 2 B, (iv) B → 2 A?609viewsHas a video solution.
Textbook Question(a) What are the units usually used to express the rates of reactions occurring in solution?926viewsHas a video solution.
Textbook QuestionConsider the following hypothetical aqueous reaction: A1aq2S B1aq2. A flask is charged with 0.065 mol of A in a total volume of 100.0 mL. The following data are collected: Time (min) 0 10 20 30 40 Moles of A 0.065 0.051 0.042 0.036 0.031 (a) Calculate the number of moles of B at each time in the table, assuming that there are no molecules of B at time zero and that A cleanly converts to B with no intermediates.814viewsHas a video solution.
Textbook QuestionConsider the following hypothetical aqueous reaction: A1aq2S B1aq2. A flask is charged with 0.065 mol of A in a total volume of 100.0 mL. The following data are collected: Time (min) 0 10 20 30 40 Moles of A 0.065 0.051 0.042 0.036 0.031 (b) Calculate the average rate of disappearance of A for each 10-min interval in units of M>s.1449views1rankHas a video solution.
Textbook QuestionA flask is charged with 0.100 mol of A and allowed to react to form B according to the hypothetical gas-phase reaction A1g2¡B1g2. The following data are collected: Time (s) 0 40 80 120 160 Moles of A 0.100 0.067 0.045 0.030 0.020 (c) Which of the following would be needed to calculate the rate in units of concentration per time: (i) the pressure of the gas at each time, (ii) the volume of the reaction flask, (iii) the temperature, or (iv) the molecular weight of A?982viewsHas a video solution.
Textbook QuestionThe isomerization of methyl isonitrile 1CH3NC2 to acetonitrile 1CH3CN2 was studied in the gas phase at 215 C, and the following data were obtained: Time (s) 3CH3nC4 1M2 0 0.0165 2000 0.0110 5000 0.00591 8000 0.00314 12,000 0.00137 15,000 0.00074 (b) Calculate the average rate of reaction over the entire time of the data from t = 0 to t = 15,000 s.487viewsHas a video solution.
Textbook QuestionThe rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (b) Calculate the average rate of reaction for the entire time for the data from t = 0.0 min to t = 430.0 min.711viewsHas a video solution.
Textbook QuestionThe rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (a) Calculate the average rate of reaction, in M>s, for the time interval between each measurement.495viewsHas a video solution.
Textbook QuestionThe rate of disappearance of HCl was measured for the following reaction: CH3OH1aq2 + HCl1aq2¡CH3Cl1aq2 + H2O1l2 The following data were collected: Time (min) 3HCl 4 1M2 0.0 1.85 54.0 1.58 107.0 1.36 215.0 1.02 430.0 0.580 (c) Which is greater, the average rate between t = 54.0 and t = 215.0 min, or between t = 107.0 and t = 430.0 min?299viewsHas a video solution.
Textbook QuestionFor each of the following gas-phase reactions, indicate how the rate of disappearance of each reactant is related to the rate of appearance of each product: (c) N21g2 + 3 H21g2¡2 NH31g21965viewsHas a video solution.
Textbook Question(b) The reaction 2 NO1g2 + Cl21g2¡2 NOCl1g2 is carried out in a closed vessel. If the partial pressure of NO is decreasing at the rate of 56 torr/min, what is the rate of change of the total pressure of the vessel?1261viewsHas a video solution.
Textbook QuestionConsider the reaction: 2 HBr( g) ¡ H2( g) + Br2( g) a. Express the rate of the reaction in terms of the change in concentration of each of the reactants and products.1586views1rankHas a video solution.
Textbook QuestionConsider the reaction:2 HBr (g) → H2 (g) + Br2 (g)c. If the volume of the reaction vessel in part b was 1.50 L, what amount of Br2 (in moles) was formed during the first 15.0 s of the reaction?2466views1comments
Textbook QuestionConsider the reaction: 2 HBr( g) ¡ H2( g) + Br2( g) b. In the first 25.0 s of this reaction, the concentration of HBr dropped from 0.600 M to 0.512 M. Calculate the average rate of the reaction during this time interval.2651viewsHas a video solution.
Textbook QuestionConsider the reaction: 2 N2O( g) ¡ 2 N2( g) + O2( g) a. Express the rate of the reaction in terms of the change in concentration of each of the reactants and products.2898viewsHas a video solution.
Textbook QuestionFor the reaction 2 A( g) + B( g) ¡ 3 C( g), b. when A is decreasing at a rate of 0.100 M>s, how fast is B decreasing? How fast is C increasing?1589views1rankHas a video solution.
Textbook QuestionFor the reaction 2 A( g) + B( g) ¡ 3 C( g), a. determine the expression for the rate of the reaction in terms of the change in concentration of each of the reactants and products.2139views3rankHas a video solution.
Textbook QuestionConsider the reaction: 8 H2S( g) + 4 O2( g) ¡ 8 H2O( g) + S8( g) Complete the table.1111viewsHas a video solution.
Textbook QuestionConsider the reaction: C4H8( g) ¡ 2 C2H4( g) The tabulated data were collected for the concentration of C4H8 as a function of time: a. What is the average rate of the reaction between 0 and 10 s? Between 40 and 50 s?909viewsHas a video solution.
Textbook QuestionConsider the reaction: NO2( g) ¡ NO( g) + 1 2 O2( g) The tabulated data were collected for the concentration of NO2 as a function of time: a. What is the average rate of the reaction between 10 and 20 s? Between 50 and 60 s?787viewsHas a video solution.
Textbook QuestionConsider the reaction: NO2( g) ¡ NO( g) + 1 2 O2( g) The tabulated data were collected for the concentration of NO2 as a function of time: b. What is the rate of formation of O2 between 50 and 60 s?620viewsHas a video solution.
Textbook QuestionConsider the reaction: H2( g) + Br2( g) ¡ 2 HBr( g) The graph shows the concentration of Br2 as a function of time. a. Use the graph to calculate each quantity: (i) the average rate of the reaction between 0 and 25 s1194viewsHas a video solution.
Textbook QuestionConsider the reaction: 2 H2O2(aq) ¡ 2 H2O(l ) + O2( g) The graph shows the concentration of H2O2 as a function of time. Use the graph to calculate each quantity: d. If the initial volume of the H2O2 is 1.5 L, what total amount of O2 (in moles) is formed in the first 50 s of reaction?1147viewsHas a video solution.
Textbook QuestionA 1.50 L sample of gaseous HI having a density of 0.0101 g>cm3 is heated at 410 °C. As time passes, the HI decomposes to gaseous H2 and I2. The rate law is -Δ3HI4>Δt = k3HI42, where k = 0.031>1M ~ min2 at 410 °C. (b) What is the partial pressure of H2 after a reaction time of 8.00 h?344viewsHas a video solution.
Open QuestionWhich species has the greatest rate of appearance in the reaction below? 2 H2S + O2 → 2 S + 2 H2O97viewsHas a video solution.
Open QuestionWhich species has the greatest rate of disappearance in the reaction below? CH4 + 2 O2 → CO2 + 2 H2O102viewsHas a video solution.
Open QuestionWhich species has the greatest rate of disappearance in the reaction below? CH4 + 2 O2 → CO2 + 2 H2O97viewsHas a video solution.