(b) Given that ΔG° for reaction 1 is positive (155kJ/molrxn), what must be true about the sign of ΔH° for the reaction? Justify your answer

The sign of ΔH° for the reaction is positive.

Explanation:

Given: = 155 kJ/mol (1 kJ = 1000 J) = 155000 J/mol

The relation between and is as follows.

As the given value of is positive. This means that on further calculation the value of will come out to be positive.

Thus, we can conclude that the sign of ΔH° for the reaction is positive.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.