Phosphorous acid, H3PO3(aq), is a diprotic oxyacid that is an important compound in industry and agriculture.

Pka1=1.30
Pka2=6.70

Calculate the pH for each of the following points in the titration of 50.0 mL of a 2.4 M H3PO3(aq) with 2.4 M KOH(aq).

(a) before addition of any KOH
(b) after addition of 25.0 mL of KOH
(c) after addition of 50.0 mL of KOH
(d) after addition of 75.0 mL of KOH
(e) after addition of 100.0 mL of KOH

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.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

it's all four options.