Directions: Predict the rate of the reaction in the following, Assume that the substances below are reactants for different reactions. Indicate if the reaction will be slower, faster, or have the same rate. The first one is done for you. Normal condition Changed condition Factor Reaction rate 20% HCI 5% HCI concentration faster 1. 276 K 315 K 2. A cube of sugar A powder of sugar 1 sampalok cube 52 g of NaOH 9.25 x 1023 atoms Li 3. 5 sampalok cube 4. 45 g of NaOH 5. 3.68 x 1025 atoms of Li 6. 500 K, 4.5% Barium 600K, 4.5% Barium 52 g of NaOH 5.6 L of soy sauce 600K, 5.5% Barium Starch + water + amylase 7. 45 g of Na0H 8. 560 mL of soy sauce 9.500 K, 4.5% Barium 10.Starch + water

Directions: Predict the rate of the reaction in the following, Assume that the substances below are reactants for different reactions. Indicate if the reaction will be slower, faster, or have the same rate. The first one is done for you. Normal condition Changed condition Factor Reaction rate 20% HCI 5% HCI concentration faster 1. 276 K 315 K 2. A cube of sugar A powder of sugar 1 sampalok cube 52 g of NaOH 9.25 x 1023 atoms Li 3. 5 sampalok cube 4. 45 g of NaOH 5. 3.68 x 1025 atoms of Li 6. 500 K, 4.5% Barium 600K, 4.5% Barium 52 g of NaOH 5.6 L of soy sauce 600K, 5.5% Barium Starch + water + amylase 7. 45 g of Na0H 8. 560 mL of soy sauce 9.500 K, 4.5% Barium 10.Starch + water

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A flask is charged with 0.140 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction. A(g) → B(g) The following data are collected. Os 0 40 S 0.072 80 s 0.025 120 s 0.014 (a) Calculate the number of moles of B at each time in the table. 160 s 0.013 0 - 40 s 0.0018 40 - 80 s 0.000625 80 - 120 s 0.00035 120 - 160 mol/s 0.000325 times (s) mol mol x mol x mol moles of A X mol mol/s mol/s 0 (b) Calculate the average rate of disappearance of A for each 40 s interval, in units of mol/s. mol/s 40 mol/s 80 120 0.140 0.068 0.043 0.029 160 0.016
The reaction diagram shown below represents an exothermic reaction. Reactants Energy released Products Direction of reaction O True False Stored chemical energy
2. Fill in the blank letters for each step in the following series of reactions. NaOEt A ELONA OEt heat B D
Which of the following statements is a true statement concerning a reaction that has reached a state of equilibrium? A system has reached equilibrium when the concentrations of reactants and products remain constant. A system has reached equilibrium when the reaction has stopped and no more products are formed. A system has reached equilibrium when the rate constant for the forward reaction equals the rate constant of the reverse reaction. A system has reached equilibrium when the concentrations of reactants and products correspond to the stoichiometric ratios determined by the balanced equation.
Iron fillings (very small pieces of iron) rust faster than iron nails. This demonstrates that the rate of reaction depends on the a. temperature of the reactants b. chemical nature of the reacting substances c. state of subdivision of the reactants d. concentrations of the reactants e. presence of a catalyst
Consider the same reaction taking place in three vessels. The vessels all contain the same amount of each reactant, but the vessels have different volume and temperature. Rank the vessels in order from the slowest reaction to the fastest reaction. Vessel A: 2.0 L at 50°C Vessel B: 2.0Lat 30°C Vessel C: 4.0L at 30°C Rate of reaction is OA
Which of the following is an example of reactant concentration affecting the rate of a reaction? Select the correct answer below: A) A wooden table burns more quickly in a fire than an iron headboard. B) Five 4-inch diameter saplings burn more rapidly than a 20-inch tree of the same height. C) Phosphorus burns much more rapidly in an atmosphere of pure oxygen than in air, which is about 21% oxygen. D) Food spoils more quickly on a kitchen counter than in a refrigerator.
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Combination Reactions solid magnesium metal + oxygen gas ® solid magnesium oxide solid copper metal + oxygen gas ® solid copper(II) oxide solid aluminum metal + iodine solid ® aluminum iodide