A reaction is nonspontaneous at room temperature but is spontaneous at -40°C. Wh

Question

A reaction is nonspontaneous at room temperature but is spontaneous at -40°C. What can you say about the signs and relative magnitudes of ?G, ?H, ?S, and -T?S?

At lower temperatures, determine the signs for the following.
?G is: positive, greater than 0 or negative, less than 0?
?H is: positive, greater than 0 or negative, less than 0?
?S is: positive, greater than 0 or negative, less than 0?
-T?S is: positive, greater than 0 or negative, less than 0?
The ?H value becomes: smaller, larger, or smaller or larger depending on temperature than the -T?Svalue?

A reaction is nonspontaneous at room temperature but is spontaneous at -40°C. What can you say about the signs and relative magnitudes of ?G, ?H, ?S, and -T?S?

At lower temperatures, determine the signs for the following.
?G is: positive, greater than 0 or negative, less than 0?
?H is: positive, greater than 0 or negative, less than 0?
?S is: positive, greater than 0 or negative, less than 0?
-T?S is: positive, greater than 0 or negative, less than 0?
The ?H value becomes: smaller, larger, or smaller or larger depending on temperature than the -T?Svalue?

Explanation / Answer

DH = -ve , DS = +ve

at rootemperature dg = +VE. so that it is nonspontaneous.

at low teperature DH > TDS .SO that, DG is -ve, is spontaneous.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.