Given the following thermochemical equations, Equation 1: 4B(s) + 3O2(g) → 2B2O3(s) ∆Ho= -2543.8 kJ Equation 2: H2 (g) + ½ O2(g) → H2O (g) ∆Ho= -241.8 kJ Equation 3: B2H6(s) + 3O2(g) → B2O3(s) + 3H2O (g) ∆Ho= -2032.9 kJ Which of the following statement/s is/are true in calculating the ∆Ho for the decomposition of B2H6 into its elements? Check all that apply. Equation 1 was reveresed and divided by 2. Equation 3 was neither reversed nor multiplied by a factor. Equation 1 was reversed and divided by 1/2. Equation 2 was reversed and multiplied by 3.
Given the following thermochemical equations, Equation 1: 4B(s) + 3O2(g) → 2B2O3(s) ∆Ho= -2543.8 kJ Equation 2: H2 (g) + ½ O2(g) → H2O (g) ∆Ho= -241.8 kJ Equation 3: B2H6(s) + 3O2(g) → B2O3(s) + 3H2O (g) ∆Ho= -2032.9 kJ Which of the following statement/s is/are true in calculating the ∆Ho for the decomposition of B2H6 into its elements? Check all that apply. Equation 1 was reveresed and divided by 2. Equation 3 was neither reversed nor multiplied by a factor. Equation 1 was reversed and divided by 1/2. Equation 2 was reversed and multiplied by 3.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 65GQ
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Question
Given the following thermochemical equations,
Equation 1: 4B(s) + 3O2(g) → 2B2O3(s) ∆Ho= -2543.8 kJ
Equation 2: H2 (g) + ½ O2(g) → H2O (g) ∆Ho= -241.8 kJ
Equation 3: B2H6(s) + 3O2(g) → B2O3(s) + 3H2O (g) ∆Ho= -2032.9 kJ
Which of the following statement/s is/are true in calculating the ∆Ho for the decomposition of B2H6 into its elements? Check all that apply.
|
Equation 1 was reveresed and divided by 2. |
||
|
Equation 3 was neither reversed nor multiplied by a factor. |
||
|
Equation 1 was reversed and divided by 1/2. |
||
|
Equation 2 was reversed and multiplied by 3. |
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