PRE-LAB QUESTIONS 1.) Describe two ways you know that a chemical reaction has taken place. 2.)...
PRE-LAB QUESTIONS
1.) Describe two ways you know that a chemical reaction has taken place.
2.) Compare and contrast physical change vs. chemical change.
3.) What is the difference between an intrinsic property and an extrinsic property? Give an example of each, different than those listed in this lab.
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PRE-LAB QUESTIONS
1.) Describe two ways you know that a chemical reaction has
taken place.
2.)...
1.) 7.) 9.) 11.) 1. How do we know when a chemical reaction is taking place?...
1.)
7.)
9.)
11.)
1. How do we know when a chemical reaction is taking place? Can you think of an example of how each of the five senses (sight, hearing, taste, touch, smell) All even-numbered Questions and Problems have ans might be used in detecting when a chemical reaction has taken place? 7. What are the substances to the left of the arrow in a chemical equation called? To the right of the arrow? What does the arrow itself...
Chemical Change and Chemical Equations Name G No. Pre-lab Questions: Classify each of the following changes...
Chemical Change and Chemical Equations Name G No. Pre-lab Questions: Classify each of the following changes as physical or chemical and, in the cases of a chemical change, describe one observation that indicates new substances have been formed 1. a. Milk sours b. A wet handkerchief dries c. Fruit ripens d. A stick of Dynamite explodes Air is compressed into a steel container f. Water boils g. A baking cake burns h. A silver tray tarnishes i. On a hot...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should be able to answer the Before b following questions. Give an example, other than Redox reaction: Co the ones listed in this experiment, of redox and metathesis reactions. metathesis: NaCl (aq) + AgNO3(aq)-ma(s), Nakoaap ,. When will reactions proceed to completion? Define percent yield in general terms. iclI is the ratio of actua vied to the . theoretical yield. % yield'actual.ficidx Theoretical yield 4....
Pre-Lab Questions 1. Describe the hazards associated with each of the materials listed below. (2 points...
Pre-Lab Questions 1. Describe the hazards associated with each of the materials listed below. (2 points each) a. Burning Mg ribbon b. 2 M HCI C. H gas 2. Distinguish between exothermic and endothermic reactions. (2 points) 3. Identify the general reaction type for each of the following reactions: (4 points each) a. N. (8) + 3H,(g) → 2 NH (8) b. NaOH(aq) + HCl(aq) → NaCl (aq) + H,O (1) c. Cu (s) + 2 AgNO, (aq) → Cu(NO),...
Questions on a pre lab for Kinetics: the Iodine Clock Reaction 2. How could one determine...
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
Pre-Lab Study Questions 1. What factors increase the rate of a chemical reaction? 2. When is...
Pre-Lab Study Questions 1. What factors increase the rate of a chemical reaction? 2. When is equilibrium established in a reversible reaction? 3. How does a system at equilibrium respond to the addition of more reactant? 4. How does a system at equilibrium respond to the addition of more product? 5. In Part C, we look at the following reaction: Fe (aq)+SCN" (aq) P FSCN- (aq)
Help with question #4. The reaction can be taken from #1 . wILLIAMSON ETHER SYNTHESS: PREPARAT?ON...
Help with question #4. The reaction can be taken from #1
. wILLIAMSON ETHER SYNTHESS: PREPARAT?ON OF PHENACETN FROM ACETAMINOPHEN LA8 10 LAB 10 ? NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Draw the mechanism for the reaction between phenacetin, potassium carbonate, and 2. List three limitations of the Williamson ether synthesis and explain how our choice of 3. What is the purpose of the rotary evaporator? What other technique that...
PLEASE PLEASE answer all :) Name: CEII2L Spring 2020 Pre-Lab Questions WinQual 2 1. Forcach reaction...
PLEASE PLEASE answer all :)
Name: CEII2L Spring 2020 Pre-Lab Questions WinQual 2 1. Forcach reaction described below, write the chemical equation a) Lead(II) nitrate and sodium sulfate solutions are mixed together b) Silver nitrate and sodium chloride solutions are mixed together c) Silver nitrate and sodium hydroxide solutions are mixed together 2. Write the balanced precipitation reactions for the following reactions. Use the solubility rules to determine if a precipitate happened. 11.51 Nal + AgNO, Na SO4 + AgNO3-...
Name PRE-LAB QUESTIONS 1. Using your previous general chemistry knowledge, give some guidelines for predicting the...
Name PRE-LAB QUESTIONS 1. Using your previous general chemistry knowledge, give some guidelines for predicting the sign of AH" in terms of breaking and forming bonds. 2. Which two scenarios (one for each) from Table 8-1 are consistent with what we know about the melting and forming of ice as a function of temperature? 3. Write the balanced chemical equation for the reaction of hydrochloric acid with calcium hy- droxide. What are the total ionic and net ionic equations for...
Pre-Lab Questions 1. What acid is required for proper digestion in the stomach? 2. What is...
Pre-Lab Questions 1. What acid is required for proper digestion in the stomach? 2. What is the normal pH range of the stomach? 3. Describe two ways in which the stomach prevents acid from damaging its lining (called the mucosa). 4. Name two substances that can damage the mucosa. Describe how each works. S. Why does the reaction between carbonate-containing antacids and stomach acid produce a "burp 6. Why do we refer to the reaction between an antacid and stomach...
1.)
7.)
9.)
11.)
1. How do we know when a chemical reaction is taking place? Can you think of an example of how each of the five senses (sight, hearing, taste, touch, smell) All even-numbered Questions and Problems have ans might be used in detecting when a chemical reaction has taken place? 7. What are the substances to the left of the arrow in a chemical equation called? To the right of the arrow? What does the arrow itself...
Chemical Change and Chemical Equations Name G No. Pre-lab Questions: Classify each of the following changes as physical or chemical and, in the cases of a chemical change, describe one observation that indicates new substances have been formed 1. a. Milk sours b. A wet handkerchief dries c. Fruit ripens d. A stick of Dynamite explodes Air is compressed into a steel container f. Water boils g. A baking cake burns h. A silver tray tarnishes i. On a hot...
Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should be able to answer the Before b following questions. Give an example, other than Redox reaction: Co the ones listed in this experiment, of redox and metathesis reactions. metathesis: NaCl (aq) + AgNO3(aq)-ma(s), Nakoaap ,. When will reactions proceed to completion? Define percent yield in general terms. iclI is the ratio of actua vied to the . theoretical yield. % yield'actual.ficidx Theoretical yield 4....
Pre-Lab Questions 1. Describe the hazards associated with each of the materials listed below. (2 points each) a. Burning Mg ribbon b. 2 M HCI C. H gas 2. Distinguish between exothermic and endothermic reactions. (2 points) 3. Identify the general reaction type for each of the following reactions: (4 points each) a. N. (8) + 3H,(g) → 2 NH (8) b. NaOH(aq) + HCl(aq) → NaCl (aq) + H,O (1) c. Cu (s) + 2 AgNO, (aq) → Cu(NO),...
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
Pre-Lab Study Questions 1. What factors increase the rate of a chemical reaction? 2. When is equilibrium established in a reversible reaction? 3. How does a system at equilibrium respond to the addition of more reactant? 4. How does a system at equilibrium respond to the addition of more product? 5. In Part C, we look at the following reaction: Fe (aq)+SCN" (aq) P FSCN- (aq)
Help with question #4. The reaction can be taken from #1
. wILLIAMSON ETHER SYNTHESS: PREPARAT?ON OF PHENACETN FROM ACETAMINOPHEN LA8 10 LAB 10 ? NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Draw the mechanism for the reaction between phenacetin, potassium carbonate, and 2. List three limitations of the Williamson ether synthesis and explain how our choice of 3. What is the purpose of the rotary evaporator? What other technique that...
PLEASE PLEASE answer all :)
Name: CEII2L Spring 2020 Pre-Lab Questions WinQual 2 1. Forcach reaction described below, write the chemical equation a) Lead(II) nitrate and sodium sulfate solutions are mixed together b) Silver nitrate and sodium chloride solutions are mixed together c) Silver nitrate and sodium hydroxide solutions are mixed together 2. Write the balanced precipitation reactions for the following reactions. Use the solubility rules to determine if a precipitate happened. 11.51 Nal + AgNO, Na SO4 + AgNO3-...
Name PRE-LAB QUESTIONS 1. Using your previous general chemistry knowledge, give some guidelines for predicting the sign of AH" in terms of breaking and forming bonds. 2. Which two scenarios (one for each) from Table 8-1 are consistent with what we know about the melting and forming of ice as a function of temperature? 3. Write the balanced chemical equation for the reaction of hydrochloric acid with calcium hy- droxide. What are the total ionic and net ionic equations for...
Pre-Lab Questions 1. What acid is required for proper digestion in the stomach? 2. What is the normal pH range of the stomach? 3. Describe two ways in which the stomach prevents acid from damaging its lining (called the mucosa). 4. Name two substances that can damage the mucosa. Describe how each works. S. Why does the reaction between carbonate-containing antacids and stomach acid produce a "burp 6. Why do we refer to the reaction between an antacid and stomach...
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