Question

If energy is transferred spontaneously as heat from a substance with a temperature of T1 to a substance with a temperature of T2, which of the following statements must be true?
1-T1 < T2

2-T1 = T2

3-T1 > T2

4-more information is needed

Answer 1

Answer: The statement $T_{1} > T_{2}$ must be true.

Explanation:

As it is given that heat is being transferred from a substance with temperature $T_{1}$ to a substance with temperature $T_{2}$.

It is known that heat will always being transferred from a higher temperature to a lower temperature. Because at higher temperature the molecules of a substance acquire more energy and when they lose energy then a decrease in temperature occurs.

Hence, in the given situation $T_{1} > T_{2}$.

Thus, we can conclude that the statement $T_{1} > T_{2}$ must be true.