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. Upper H subscript 2 plus upper C subscript 2 upper H subscript 4 plus 2 upper H right arrow 2 upper H plus upper C subscript 2 upper H subscript 5 plus upper C subscript 2 upper H subscript 6. Upper C subscript 2 upper H subscript 4 plus upper C subscript 2 upper H subscript 5 plus upper H subscript 2 right arrow upper C subscript 2 upper H subscript 5 plus upper C subscript 2 upper H subscript 6.

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/3210-08-09-20-02-task/mc001-1.jpg

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

Is the overall reaction endothermic or exothermic? ✔ endothermicexothermic

Revolt · Accepted Answer

✔ endothermic

Question 4

Which statement is true? ✔ A, B and C are intermediate reactions.B needs to be reversed.

Revolt · Accepted Answer

✔ A, B and C are intermediate reactions.

Question 5

Which equation must be added to equation (1) to produce equation (2)?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/3210-08-09-20-03-task/mc001-3.jpg

Question 6

reverse the direction of equation (2)multiply equation (1) by 3multiply equation (2) by 1/2

Revolt · Accepted Answer

reverse the direction of equation (2); multiply equation (2) by 1/2

Question 7

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

Revolt · Accepted Answer

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

Question 8

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

Revolt · Accepted Answer

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

Question 9

Use the enthalpy diagram on the right to answer the following questions.Which arrow(s) represent endothermic reactions? ✔ A and DA onlyB and CD only

Revolt · Accepted Answer

✔ A and D; A and D; D; endothermic; A, B and C are intermediate reactions.

Question 10

Complete the following based on the diagram.Arrow A: ✔ 74.6 kJ–95.7 kJ–184.6 kJ–205.7 kJ

Revolt · Accepted Answer

✔ 74.6 kJ; 74.6 kJ; exothermic; has a magnitude that is less than that of B; represents the overall enthalpy of reaction

Enthalpy of Reaction Answers

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