2. A chemical reaction was carried out in an apparatus as shown in the lab manual....
2. A chemical reaction was carried out in an apparatus as shown in the lab manual. The volume change of the ice/water mixture was found to be 0.5177 mL during the time of the reaction.
a. Determine the mass of ice that was melted.
b. Determine the quantity of heat (in Joules) generated by the
reaction.
c. If 0.0040 moles of the limiting reactant was used in the reaction. Determine ΔH per mole of limiting reactant.
d. Use thermodynamic tables (CRC Handbook) to calculate the value of ΔH for the following reaction: (Be sure of the units in the CRC Handbook as some are listed in Kcal/mol).
Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g) + heat e. Calculate the percent difference between 2c and 2d.
Homework Answers
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2. A chemical reaction was carried out in an apparatus as shown
in the lab manual....
please write out 4 In the following chemical reaction. Balance the molecular equation by adding coefficient....
please write out
4 In the following chemical reaction. Balance the molecular equation by adding coefficient. Write the net ionic equation by adding phases. Do not write ionic Eq (4 pts) Molecular Eq.: Al(OH), (aq) + HNO, (aq) + - Al(NO) (aq) + HO (1) Net ionic Eq. 5 Determine the oxidation number of the element in the following ions or compounds (1 pt each) a) CIO; CI - b) SO, S = c) PbO Pb- 6 Determine if the...
Write the state of matter for every substance in the chemical reaction. Explain your limiting reactant...
Write the state of matter for every substance in the chemical reaction. Explain your limiting reactant determinations. Mark every measured number showing the significant figures (SF). Do not round any intermediate values. (you can show two digits past the marked SF) Show subtraction and addition in the vertical format. Show your final answer before rounding and then in the final form, rounded correctly. Every number must have units and substances. You can use tables or other means to increase your...
Lab 9 Heat of Reaction OBJECTIVE: To experimentally determine the heat of reaction for two exothermic...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
Lab 14 Heat of Reaction Objective: To experimentally determine the heat of reaction for two exothermic...
Lab 14 Heat of Reaction Objective: To experimentally determine the heat of reaction for two exothermic reactions. Consider the following equations. (1) Mg(s) + 2HCI → MgCl2(aq) + H2(g) Hz(8) AH = ? (2) MgO(s) + 2HCl(aq) → MgCl(aq) + HOH (1) AH2 = ? The reactions represented by equations (1) and (2) will be our experimental work for today. Background: The heat given off or gained in a reaction is commonly called the heat of reaction. A reaction that...
Ethalpy Change of a Chemical Reaction, Sample calculations for Run 2 B, all questions, please hel...
Ethalpy Change of a Chemical Reaction, Sample calculations for
Run 2 B, all questions, please help me, thank you very much
A chemical reaction involves breaking, making, or changing chemical bonds. These alterations in bonding lead to a change in enthalpy, AHo, between the products and reactants. This enthalpy change takes into account the change in intermal energy in the system and the work done by the system on its surroundings during the reaction. If the reaction occurs at a...
I'm struggling with this lab, need help with questions on page 3, explanations please. F11 FiB...
I'm struggling with this lab, need help with questions on page 3,
explanations please.
F11 FiB FIO R F9 FO FE FY F4 Name N E The Enthalpy of Neutralization of Phosphoric Acid As you have seen in previous experiments, a great deal can be learned by conducting an acid- base reaction as a titration. In addition, acid-base reactions can be observed and measured thermodynamically. In this case, the reaction is carried out in a calorimeter. If the temperature of...
EXPERIMENT 9 CHEMICAL REACTIONS: STOICHIOMETRY LABORATORY REPORT Your Name TA's Name You must rea...
EXPERIMENT 9 CHEMICAL REACTIONS: STOICHIOMETRY LABORATORY REPORT Your Name TA's Name You must read pages 69 and 70 to complete the following calculations. Lab Section 1411. Date Trial #1 Trial #2 Trial #3 vol . 0.100 M K2CO, solution -1200 mL 12.00 mL mmole K2CrO vol. 0.100 M Pb(NO,), solution 10.00ml mmole Pb(NO) 12.00m 14.00 mL 20 g mass product+paper 0.579 g0.654 g mass dry filter paper 0266 mass PbCrO, collected precip. 9 mmole Pbcro, CALCULATIONS AND QUESTIONS (USE THE...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory Exercises PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory
Exercises
PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN 2 Reaction Butylbromide was prepared by refluxing in a 100-ml round bottomed flask a solution containing 13:35 Br 15 ml of water, 10 mL of n-butyl alcohol. 15 ml of concentrated H.SO. and a few boiling stories, 1. 2. R." d 1.275 laborales Nel CH3CH2CH2CH2OH + NaBr H2SO4 Superletalyst CHCH2CH2CHBr + NaHSO + HO (eq. 16) 1-butanol bp 118 C 1-bromobutane d 0.810 bp...
please write out
4 In the following chemical reaction. Balance the molecular equation by adding coefficient. Write the net ionic equation by adding phases. Do not write ionic Eq (4 pts) Molecular Eq.: Al(OH), (aq) + HNO, (aq) + - Al(NO) (aq) + HO (1) Net ionic Eq. 5 Determine the oxidation number of the element in the following ions or compounds (1 pt each) a) CIO; CI - b) SO, S = c) PbO Pb- 6 Determine if the...
Lab 9 Heat of Reaction
OBJECTIVE:
To experimentally determine the heat of reaction for two
exothermic reactions.
DISCUSSION:
The heat given off or gained in a reaction is called the heat
of reaction (∆?????????).
A reaction that releases heat is known as an exothermic
reaction; an endothermic reaction
is one that absorbs heat.
The heat of the reaction corresponds to one mole of the
reactant and is expressed in
kilocalories per mole of reactant or in kilojoules per mole of...
Lab 14 Heat of Reaction Objective: To experimentally determine the heat of reaction for two exothermic reactions. Consider the following equations. (1) Mg(s) + 2HCI → MgCl2(aq) + H2(g) Hz(8) AH = ? (2) MgO(s) + 2HCl(aq) → MgCl(aq) + HOH (1) AH2 = ? The reactions represented by equations (1) and (2) will be our experimental work for today. Background: The heat given off or gained in a reaction is commonly called the heat of reaction. A reaction that...
Ethalpy Change of a Chemical Reaction, Sample calculations for
Run 2 B, all questions, please help me, thank you very much
A chemical reaction involves breaking, making, or changing chemical bonds. These alterations in bonding lead to a change in enthalpy, AHo, between the products and reactants. This enthalpy change takes into account the change in intermal energy in the system and the work done by the system on its surroundings during the reaction. If the reaction occurs at a...
I'm struggling with this lab, need help with questions on page 3,
explanations please.
F11 FiB FIO R F9 FO FE FY F4 Name N E The Enthalpy of Neutralization of Phosphoric Acid As you have seen in previous experiments, a great deal can be learned by conducting an acid- base reaction as a titration. In addition, acid-base reactions can be observed and measured thermodynamically. In this case, the reaction is carried out in a calorimeter. If the temperature of...
EXPERIMENT 9 CHEMICAL REACTIONS: STOICHIOMETRY LABORATORY REPORT Your Name TA's Name You must read pages 69 and 70 to complete the following calculations. Lab Section 1411. Date Trial #1 Trial #2 Trial #3 vol . 0.100 M K2CO, solution -1200 mL 12.00 mL mmole K2CrO vol. 0.100 M Pb(NO,), solution 10.00ml mmole Pb(NO) 12.00m 14.00 mL 20 g mass product+paper 0.579 g0.654 g mass dry filter paper 0266 mass PbCrO, collected precip. 9 mmole Pbcro, CALCULATIONS AND QUESTIONS (USE THE...
Synthesis of 1-Bromobutane: An SN2 Reaction Pre-Laboratory
Exercises
PRE-LABORATORY EXERCISES NAME: Cynthesis of 1-Bromobutane: An SN 2 Reaction Butylbromide was prepared by refluxing in a 100-ml round bottomed flask a solution containing 13:35 Br 15 ml of water, 10 mL of n-butyl alcohol. 15 ml of concentrated H.SO. and a few boiling stories, 1. 2. R." d 1.275 laborales Nel CH3CH2CH2CH2OH + NaBr H2SO4 Superletalyst CHCH2CH2CHBr + NaHSO + HO (eq. 16) 1-butanol bp 118 C 1-bromobutane d 0.810 bp...
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