Class Period Name: Heat of Reaction and Hess's Law Data Table Reaction A (Mg + HCI) Reaction B (Mgo+ HCI) Trial 1 Trial 2 Trial 1 Trial 2 Mass of Calorimeter (g) 2.384 2.431 2.213 2.212 Mass of Calorimeter + HCI 16.973 16.842 17.233 17.152 Solution (g) Mass of Mg (Reaction A) or 0.0282 MgO (Reaction B) (g) Initial Temperature ("C) 0.379 0.198 0.182 21.2 21.2 21.1 21.1 Final Temperature (°C) 30.0 32.4 31.0 30.6 Post-Laboratory Questions 1. Complete the following Results Table (show calculations on next page.) Reaction A (Mg + HCI) Reaction B (MgO + HCI) Trial 1 Trial 2 Trial 1 Trial 2 Mass of Hydrochloric Acid Total Mass of Reactants Temperature Change Heat Absorbed by Solution Moles of Mg or MgO Enthalpy Change per Mole of Mg or MgO Average Enthalpy Change g HCI =
Class Period Name: Heat of Reaction and Hess's Law Data Table Reaction A (Mg + HCI) Reaction B (Mgo+ HCI) Trial 1 Trial 2 Trial 1 Trial 2 Mass of Calorimeter (g) 2.384 2.431 2.213 2.212 Mass of Calorimeter + HCI 16.973 16.842 17.233 17.152 Solution (g) Mass of Mg (Reaction A) or 0.0282 MgO (Reaction B) (g) Initial Temperature ("C) 0.379 0.198 0.182 21.2 21.2 21.1 21.1 Final Temperature (°C) 30.0 32.4 31.0 30.6 Post-Laboratory Questions 1. Complete the following Results Table (show calculations on next page.) Reaction A (Mg + HCI) Reaction B (MgO + HCI) Trial 1 Trial 2 Trial 1 Trial 2 Mass of Hydrochloric Acid Total Mass of Reactants Temperature Change Heat Absorbed by Solution Moles of Mg or MgO Enthalpy Change per Mole of Mg or MgO Average Enthalpy Change g HCI =
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
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 66E: In a coffee-cup calorimeter, 100.0 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both...
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Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
Use the data table below, complete only Reaction B of the Post Lab Questions. There should be a picture where I sent of what calculations must be put down.
Transcribed Image Text:Class Period
Name:
Heat of Reaction and Hess's Law
Data Table
Reaction A (Mg + HCI)
Reaction B (MgO+ HCI)
Trial 1
Trial 2
Trial 1
Trial 2
Mass of Calorimeter (g)
2.384
2.431
2.213
2.212
16.842
17.233
17.152
Mass of Calorimeter + HCI
Solution (g)
Mass of Mg (Reaction A) or 0.0282
MgO (Reaction B) (g)
Initial Temperature (°C)
16.973
0.379
0.198
0.182
21.2
21.2
21.1
21.1
Final Temperature (°C)
30.0
32.4
31.0
30.6
Post-Laboratory Questions
1. Complete the following Results Table (show calculations on next page.)
Reaction A (Mg + HCI)
Reaction B (MgO + HCI)
Trial 1
Trial 2
Trial 1
Trial 2
Mass of Hydrochloric
Acid
Total Mass of Reactants
Temperature Change
Heat Absorbed by
Solution
Moles of Mg or Mgo
Enthalpy Change per
Mole of Mg or MgO
Average Enthalpy
Change
g HCI =
Transcribed Image Text:Calculations: show using data from Trial 1 of Reaction
Total Mass =
AT =
9solution =
Moles Mg =
ΔΗ-
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