Question

NI3 decomposes as shown below: 2 NI3(s) ? N2(g) + 3 I2(g) Use the thermochemical information given below to calculate the standard Gibbs energy change (in kJ mol?1) of this reaction at 298.15 K. | | NI3(s) | N2(g) | I2(g) | |---|---|---|---| | ?Hf% (kJ mol?1) | 287.0 | 0 | 62.40 | | S% (J mol?1K?1) | 230.0 | 191.6 | 260.7 | -387.0 +513.7 -161.1 +119.0 -540.0

          NI3 decomposes as shown below:

2 NI3(s) ? N2(g) + 3 I2(g)

Use the thermochemical information given below to calculate the standard Gibbs energy change (in kJ mol?1) of this reaction at 298.15 K.

| | NI3(s) | N2(g) | I2(g) |
|---|---|---|---|
| ?Hf% (kJ mol?1) | 287.0 | 0 | 62.40 |
| S% (J mol?1K?1) | 230.0 | 191.6 | 260.7 |

-387.0
+513.7
-161.1
+119.0
-540.0

NI3 decomposes as shown below:

2 NI3(s) ? N2(g) + 3 I2(g)

Use the thermochemical information given below to calculate the standard Gibbs energy change (in kJ mol?1) of this reaction at 298.15 K.

| | NI3(s) | N2(g) | I2(g) |
|—|—|—|—|
| ?Hf% (kJ mol?1) | 287.0 | 0 | 62.40 |
| S% (J mol?1K?1) | 230.0 | 191.6 | 260.7 |

-387.0
+513.7
-161.1
+119.0
-540.0

Added by Troy A.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

01/01/2023

Step 1

For Nl(s) → Nl(g): ΔG = 287.0 kJ/mol - (298.15 K * 230.0 J/mol-K * 1 kJ/1000 J) ΔG = 287.0 kJ/mol - 68.67 kJ/mol ΔG = 218.33 kJ/mol For I2(g) → I2(g): Since there is no change in the state of the substance, both ΔH and ΔS are zero, so ΔG is also zero. For Show more…

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NI3 decomposes as shown below: 2 NI3(s) → N2(g) + 3 I2(g) Use the thermochemical information given below to calculate the standard Gibbs energy change (in kJ mol−1) of this reaction at 298.15 K. NI3(s) N2(g) I2(g) ΔHf% (kJ mol−1) 287.0 0 62.40 S% (J mol−1K−1) 230.0 191.6 260.7 -387.0 +513.7 -161.1 +119.0 -540.0