Enthalpy of Reaction

Question 1

Upper C subscript 2 upper H subscript 4 plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 6.

Revolt · Accepted Answer

Upper C subscript 2 upper H subscript 4 plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 6.

Question 2

Which statement is true? The first equation must be doubled and the second equation reversed.✔ The first equation must be reversed and the third equation doubled.All three equations can be added as is.

Revolt · Accepted Answer

The first equation must be reversed and the third equation doubled.

Question 3

Question 6

Revolt · Accepted Answer

reverse the direction of equation (2)

Question 4

Upper C upper H subscript 4 (g) plus upper C l subscript 2 (g) right arrow upper C upper C l subscript 4 (g) plus upper H upper C l (g).

Revolt · Accepted Answer

Answer image: https://media.edgenuity.com/EVresources/3210-08-09-20-05-task/mc001-2.jpg

Question 5

What must be done to calculate the enthalpy of reaction? Check all that apply.

Revolt · Accepted Answer

The first equation must be halved.; The second equation must be halved.; The second equation must be reversed.; The third equation must be halved.

Question 6

Use the enthalpy diagram on the right to answer the following questions.Which arrow(s) represent endothermic reactions? Which arrow represents the overall reaction? Is the overall reaction endothermic or exothermic? Which statement is true?

Revolt · Accepted Answer

Selection 1: A and D; Selection 2: D; Selection 3: endothermic; Selection 4: A, B and C are intermediate reactions.

Question 7

Complete the following based on the diagram.Arrow A: Arrow B: Arrow C: Arrow D:

Revolt · Accepted Answer

Selection 1: 74.6 kJ; Selection 2: exothermic; Selection 3: has a magnitude that is less than that of B; Selection 4: represents the overall enthalpy of reaction

Question 8

What must be done to calculate the enthalpy of reaction? Check all that apply.

Revolt · Accepted Answer

-108.7

Enthalpy of Reaction Answers

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