Homework Help is Here – Start Your Trial Now!
Science
Chemistry
Target Equation: (1)  Mg(s) + 1/2 O2 (g) → MgO(s) Reactions:  (2)  MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l)      ΔH2 = ? (3)  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)           ΔH3 = ? (4)  H2 (g) + 1/2 O2 (g) → H2O (l)                                  ΔH4 = -285.8 kJ Reaction Mass (grams) of MgO(s)  Mass (grams) of Mg(s) Volume (mL) of HCl(aq) Concentration of HCl (mol/L) Initial Temp (°C) Final Temp (°C) 2 0.40 n/a 50.0 1.00 21.5 26.5 3 n/a 0.25 50.0 1.00 22.5 34.0 Using the data above, determine the enthalphy change (ΔH) for reactions (2) and (3). List any assumptions you make. Reaction (2): MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l) Reaction (3):  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)

Target Equation: (1)  Mg(s) + 1/2 O2 (g) → MgO(s) Reactions:  (2)  MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l)      ΔH2 = ? (3)  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)           ΔH3 = ? (4)  H2 (g) + 1/2 O2 (g) → H2O (l)                                  ΔH4 = -285.8 kJ Reaction Mass (grams) of MgO(s)  Mass (grams) of Mg(s) Volume (mL) of HCl(aq) Concentration of HCl (mol/L) Initial Temp (°C) Final Temp (°C) 2 0.40 n/a 50.0 1.00 21.5 26.5 3 n/a 0.25 50.0 1.00 22.5 34.0 Using the data above, determine the enthalphy change (ΔH) for reactions (2) and (3). List any assumptions you make. Reaction (2): MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l) Reaction (3):  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question

Target Equation:
(1)  Mg(s) + 1/2 O2 (g) → MgO(s)

Reactions: 
(2)  MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l)      ΔH2 = ?
(3)  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)           ΔH3 = ?
(4)  H2 (g) + 1/2 O2 (g) → H2O (l)                                  ΔH4 = -285.8 kJ

Reaction Mass (grams) of MgO(s)  Mass (grams) of Mg(s) Volume (mL) of HCl(aq) Concentration of HCl (mol/L) Initial Temp (°C) Final Temp (°C)
2 0.40 n/a 50.0 1.00 21.5 26.5
3 n/a 0.25 50.0 1.00 22.5 34.0


Using the data above, determine the enthalphy change (ΔH) for reactions (2) and (3). List any assumptions you make.

Reaction (2): MgO (s) + 2 HCl (aq) → MgCl2 (aq) + H2O (l)
Reaction (3):  Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g)

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Thermodynamics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS