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Problem 1: Determine if the following are REDOX reaction (yes/no). If so, identify which element is oxidized and which element is reduced. Also, identify which element is oxidized and which element is reduced. Then identify the oxidizing agent and the reducing agent. Reaction 1. PbCl2 + Li2S → PbS+ 2LiCl 2. 2Na+ Cl₂ → 2NaCl 3. 2NH33H2 + N2 REDOX? Yes/No Element Element Oxidizing Oxidized Reduced Agent Reducing Agent

Problem 1: Determine if the following are REDOX reaction (yes/no). If so, identify which element is oxidized and which element is reduced. Also, identify which element is oxidized and which element is reduced. Then identify the oxidizing agent and the reducing agent. Reaction 1. PbCl2 + Li2S → PbS+ 2LiCl 2. 2Na+ Cl₂ → 2NaCl 3. 2NH33H2 + N2 REDOX? Yes/No Element Element Oxidizing Oxidized Reduced Agent Reducing Agent

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Problem 1: Determine if the following are REDOX reaction (yes/no). If so, identify which element is oxidized and which element is reduced. Also, identify which element is oxidized and which element is reduced. Then identify the oxidizing agent and the reducing agent. Reaction 1. PbCl2 + Li2S → PbS+2LiCl 2. 2Na+ Cl2 → 2NaCl 3. 2NH33H2 + N2 Problem 2: Estimate the scaling potential using Langelier saturation index for treated waste water with following waste water characteristics: Use carbonate equilibrium constants Kal, Ka2, and Ksp at 25 °C are 4.47* 10-7, 4.48 x 10-11 and 4.57 X 10-9 respectively. (Don't use correlation) REDOX? Element Element Oxidizing Reducing Yes/No Oxidized Reduced Agent Agent Constituent Concentration Ca²+ K+ Mg2+ Na* HCO3 CO3²- CI SO4²- pH 9.3 g/m3 140 14.5 13.1 125 420 ? 85.7 277 Problem 3: Use the principle of stoichiometry to determine the amount of oxygen that is required to convert octane (C8H18) to CO2 and H2O. a. Write a properly balanced overall reaction. b. Calculate the mass of O2 required per kg of octane Problem 4: What is the COD and ThOD of a 2.5 mM solution of C40H81O21N8P₂S ?
Transcribed Image Text:Problem 1: Determine if the following are REDOX reaction (yes/no). If so, identify which element is oxidized and which element is reduced. Also, identify which element is oxidized and which element is reduced. Then identify the oxidizing agent and the reducing agent. Reaction 1. PbCl2 + Li2S → PbS+2LiCl 2. 2Na+ Cl2 → 2NaCl 3. 2NH33H2 + N2 Problem 2: Estimate the scaling potential using Langelier saturation index for treated waste water with following waste water characteristics: Use carbonate equilibrium constants Kal, Ka2, and Ksp at 25 °C are 4.47* 10-7, 4.48 x 10-11 and 4.57 X 10-9 respectively. (Don't use correlation) REDOX? Element Element Oxidizing Reducing Yes/No Oxidized Reduced Agent Agent Constituent Concentration Ca²+ K+ Mg2+ Na* HCO3 CO3²- CI SO4²- pH 9.3 g/m3 140 14.5 13.1 125 420 ? 85.7 277 Problem 3: Use the principle of stoichiometry to determine the amount of oxygen that is required to convert octane (C8H18) to CO2 and H2O. a. Write a properly balanced overall reaction. b. Calculate the mass of O2 required per kg of octane Problem 4: What is the COD and ThOD of a 2.5 mM solution of C40H81O21N8P₂S ?
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