Under what conditions does an increase in temperature turn a nonspontaneous process into a spontaneous process?

This, is an incomplete question, here is a complete question.

Under what conditions does an increase in temperature turn a nonspontaneous process into a spontaneous process?

Choose one or more:

ΔH < 0, ΔS > 0

ΔH > 0, ΔS > 0

ΔH > 0, ΔS < 0

ΔH < 0, ΔS < 0

(What I'm trying to figure out is if you need to consider T being negative OR positive to start)

Answer :  The correct option is, ΔH > 0, ΔS > 0

Explanation :

According to Gibb's equation:

= Gibbs free energy  

= enthalpy change

= entropy change  

T = temperature in Kelvin

As we know that:

= +ve, reaction is non spontaneous

= -ve, reaction is spontaneous

= 0, reaction is in equilibrium

As there are 4 conditions:

(A) ΔH is positive or (ΔH>0) and ΔS is negative or (ΔS<0).

The reaction is non-spontaneous at all temperatures or spontaneous in reverse at all temperatures.

(B) ΔH is positive or (ΔH>0) and ΔS is positive or (ΔS>0).

 (at low temperature) (non-spontaneous)

 (at high temperature) (spontaneous)

The reaction is spontaneous as written above a certain temperature.

(C) ΔH is negative or (ΔH<0) and ΔS is positive or (ΔS>0).

The reaction is spontaneous as written at all temperatures

(D) ΔH is negative or (ΔH<0) and ΔS is negative or (ΔS<0).

 (at high temperature) (non-spontaneous)

 (at low temperature) (spontaneous)

The reaction is spontaneous as written below a certain temperature.

From this we conclude that, the condition ΔH is positive or (ΔH>0) and ΔS is positive or (ΔS>0) at increase in temperature turn a nonspontaneous process into a spontaneous process.

Hence, the correct option is, ΔH > 0, ΔS > 0

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.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?