Homework Answers
The most active metals in the activity series are the elements belong to groups IA and IIA of the periodic table.
So the answer is Na and Ca here.
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Pre-lab assignment CHEM 110 Experiment 10 Oxidation - Reduction Reactions 1. Active metals displace hydrogen from...
Pre-Lab Questions 1. Define each of the following terms: a. Oxidation: EXPERIMENT 5 b. Reduction: c....
Pre-Lab Questions 1. Define each of the following terms: a. Oxidation: EXPERIMENT 5 b. Reduction: c. Redox reaction: d. Activity: 2. In the following reaction identify the substance that is oxidized and the substance that is reduced. Which metal is more active? 2Al(s) + 3Cu(aq) + 2Al(aq) + 3Cu(s) Oxidized Reduced = More active = 3. Why is it necessary to clean the surfaces of the metal samples before testing them in the metal ion solutions? 4. You will not...
Pre-lab assignment CHEM 110 Experiment 12 Electrochemistry 1. Define an oxidizing agent and give an example....
Pre-lab assignment CHEM 110 Experiment 12 Electrochemistry 1. Define an oxidizing agent and give an example. 2. Balance the following redox reaction for the half-reactions below; O2 + 2H20 + 4e 40H Zn → Zn +2e 3. What is the purpose of a salt bridge? 4. What is the difference between an electrochemical cell and an electrolysis cell
Pre-Lab Assignment 1. Consult the table of reduction potentials (pages 123-124 in the lab manual) to...
Pre-Lab Assignment 1. Consult the table of reduction potentials (pages 123-124 in the lab manual) to help you answer this question. Suppose that each combination of half-cells listed below is connected with a salt bridge and allowed to react spontaneously. For each cell, (i) write the reduction half reaction and the oxidation half-reaction, then (ii) combine those half-reactions into the overall balanced redox reaction for the cell. Finally, (iii) use the reduction potentials from the table to calculate the cell...
Reactions and Neutralization in the Copper Cycle A Cycle of Chemical Reactions of Copper PRE-LABORATORY ASSIGNMENT...
Reactions and Neutralization in the Copper Cycle
A Cycle of Chemical Reactions of Copper PRE-LABORATORY ASSIGNMENT Finish the pre-laboratory assignments before the laboratory experiment. Read the manual of this experiment and complete the following questions. 1. a. Identify oxidation-reduction reactions in the copper cycle experiment. For each oxidation-reduction reaction, write half reactions to show what is oxidized and what is reduced. Identify acid-base reactions and precipitation reactions in the copper cycle experi- ment. Write equations for the corresponding reactions. b....
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
CHEM 110 Online Lab Instructions for Exp. 7 Types of Chemical Reactions 1. Read sections 8.1...
CHEM 110 Online Lab Instructions for Exp. 7 Types of Chemical Reactions 1. Read sections 8.1 to 8.3 of your lecture textbook for additional information. 2. Watch the following videos Experiment Numbers 1-7. After watching the video, record your observations in the column labeled "Observations". Experiment Number Observations 1. magnesium burning https://www.youtube.com/watchrepDGHnWaVIY 2. zinc and hydrochloric acid https://www.youtube.com/watch?vaft82C6Qg30 3. decomposition of hydrogen peroxide https://www.youtube.com/watch?v=7 X8c2bOBBO 4. iron and copper il sulfate https://www.youtube.com/watch?v4lh24GX320 5. lead Il nitrate and sulfuric acid https://www.youtube.com/watch?v=8W65711f8o...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
please help answer question 4, a-f please using the data below from chart 1 objectives from...
please help answer question 4, a-f please
using the data below from chart 1
objectives from lab, thank you
DATA:CA y 3 Ay No3 Part I: Cell Potential of voltaic cells under standard conditions: cell CU CND2 #27 14.0m Give the half Half cell reaction at Combinations Oxidation Reduction E the anode and with [ion] takes place Theoretical takes place cathode. Write in M here here (V) above the arrow E c (V) if it is oxidation or reduction. |-0.340...
1) What chemical is the titrant in this experiment? What chemical is the analyte in this experiment? Experi...
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: • Students will learn how to use a burette. • Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a...
Pre-Lab Questions 1. Define each of the following terms: a. Oxidation: EXPERIMENT 5 b. Reduction: c. Redox reaction: d. Activity: 2. In the following reaction identify the substance that is oxidized and the substance that is reduced. Which metal is more active? 2Al(s) + 3Cu(aq) + 2Al(aq) + 3Cu(s) Oxidized Reduced = More active = 3. Why is it necessary to clean the surfaces of the metal samples before testing them in the metal ion solutions? 4. You will not...
Pre-lab assignment CHEM 110 Experiment 12 Electrochemistry 1. Define an oxidizing agent and give an example. 2. Balance the following redox reaction for the half-reactions below; O2 + 2H20 + 4e 40H Zn → Zn +2e 3. What is the purpose of a salt bridge? 4. What is the difference between an electrochemical cell and an electrolysis cell
Pre-Lab Assignment 1. Consult the table of reduction potentials (pages 123-124 in the lab manual) to help you answer this question. Suppose that each combination of half-cells listed below is connected with a salt bridge and allowed to react spontaneously. For each cell, (i) write the reduction half reaction and the oxidation half-reaction, then (ii) combine those half-reactions into the overall balanced redox reaction for the cell. Finally, (iii) use the reduction potentials from the table to calculate the cell...
Reactions and Neutralization in the Copper Cycle
A Cycle of Chemical Reactions of Copper PRE-LABORATORY ASSIGNMENT Finish the pre-laboratory assignments before the laboratory experiment. Read the manual of this experiment and complete the following questions. 1. a. Identify oxidation-reduction reactions in the copper cycle experiment. For each oxidation-reduction reaction, write half reactions to show what is oxidized and what is reduced. Identify acid-base reactions and precipitation reactions in the copper cycle experi- ment. Write equations for the corresponding reactions. b....
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
CHEM 110 Online Lab Instructions for Exp. 7 Types of Chemical Reactions 1. Read sections 8.1 to 8.3 of your lecture textbook for additional information. 2. Watch the following videos Experiment Numbers 1-7. After watching the video, record your observations in the column labeled "Observations". Experiment Number Observations 1. magnesium burning https://www.youtube.com/watchrepDGHnWaVIY 2. zinc and hydrochloric acid https://www.youtube.com/watch?vaft82C6Qg30 3. decomposition of hydrogen peroxide https://www.youtube.com/watch?v=7 X8c2bOBBO 4. iron and copper il sulfate https://www.youtube.com/watch?v4lh24GX320 5. lead Il nitrate and sulfuric acid https://www.youtube.com/watch?v=8W65711f8o...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
please help answer question 4, a-f please
using the data below from chart 1
objectives from lab, thank you
DATA:CA y 3 Ay No3 Part I: Cell Potential of voltaic cells under standard conditions: cell CU CND2 #27 14.0m Give the half Half cell reaction at Combinations Oxidation Reduction E the anode and with [ion] takes place Theoretical takes place cathode. Write in M here here (V) above the arrow E c (V) if it is oxidation or reduction. |-0.340...
1) What chemical is the titrant in this experiment? What
chemical is the analyte in this
experiment?
Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: • Students will learn how to use a burette. • Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a...
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