Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- The initial rate of the reaction is determined for different initial conditions, with the results listed in the table. (a) What is the overall reaction order? (b) What is the value of the rate constant, karrow_forwardThe decomposition of hydrogen iodide on a gold surface at 150 °C HI(g) 2 H2(g) + ½ I2(g) is zero order in HI with a rate constant of 1.20x10-4 M s1. If the initial concentration of HI is 0.376 M, the concentration of HI will be | M after 2.74x103 seconds have passed.arrow_forwardCyclobutane, C4H8, consisting of molecules in which four carbon atoms for a ring, decomposes when heated to give ethylene. C4H8(g) → 2C2H4(g) The reaction is first order. In an experiment, the initial concentration of cyclobutane was (3.500x10^-3) M. After heating at 450 °C, for (5.55x10^2) s, this was reduced to (2.6090x10^-3) M. What was the concentration of cyclobutane after a total of (1.008x10^3) s? Express your answer to three significant figures. Just enter the number (e.g. 2.48x10^-4) and the unit.arrow_forward
- At a certain temperature the rate of this reaction is first order in HI with a rate constant of 1.13 s : 2HI (g) → H2 (g) +I, (g) Suppose a vessel contains HI at a concentration of 1.01 M. Calculate the concentration of HI in the vessel 0.730 seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. M Ox10arrow_forwardFor the reaction: 3 Ag + NO3– + 4 H+ –––> NO + 2 H2O + 3 Ag+ If the rate of disappearance of Ag is 0.0017 mol L–1 s–1, what is the rate of the appearance of water? For the 1st order reaction: A ––> products, assume the concentration of A falls to one-third of its original value after 150 seconds. Calculate the rate constant and the half-life.arrow_forwardThe reaction 2 NO (g) + O2 (g) → 2 NO2 (g) occurs when automobile exhaust releases NO into the atmosphere. Use the following data to determine the order with respect to NO for this reaction. Trial [NO] (M) [O2] (M) Initial Rate (M/s) 1 0.012 0.020 1.02 x 10-4 2 0.024 0.020 4.08 x 10-4 3 0.024 0.040 8.16 x 10-4 Enter the answer as a single digit, not the word.arrow_forward
- Initial rate: 1.6 •10^-7mol/L•s K=6.4 •10^-9L/mol•s Rate law: k[HI]^2 Can you please show me the steps.arrow_forward4) The decomposition of phosphorus pentachloride (PCIS) into phosphorus trichloride (PCI3) and chlorine gas (Cl2) is a first order process with a rate constant of 0.0842 s at a certain temperature. If 40.4 s after the reaction begins, the concentration of PCIs is 0.0203 M, what was the initial concentration of PCI3? (A) 6.76 x 104 M (B) 0.609 M (C) 3.42 M (D) (E) 0.495 M ES 0.820 Mt (D)arrow_forward2 3 4 =5 #1 6 7 Under certain conditions the rate of this reaction is zero order in hydrogen iodide with a rate constant of 0.0040 M-s¹: 2 HI (g) → H₂(g) + 1₂ (g) Suppose a 5.0 L flask is charged under these conditions with 300. mmol of hydrogen iodide. How much is left 4.0 s later? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. S A S ? Continue Submit 00 Xarrow_forward
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