Which of the following phase occurs at point b on the phase diagram shown below? A) deposition
B)freezing
C)melting
D) boiling

I think it’s b.

Explanation:

1. Answer;

= 5.4×10-6 g AgBr

Explanation;

AgBr(s) → Ag+(aq) + Br-(aq)Ksp = 3.3×10^-13

[Ag+][Br-] = Ksp = 3.3×10^-13 = X²

X = 5.7×10^-7 M = [Ag+] = mol/L AgBr that dissolve

1 mole of AgBr = 187.8 g

Therefore;

= 0.05 L × (5.7 × 10^-7 mol/L) × (187.8 g /mol)

= 5.4×10-6 g AgBr

2. Answer and explanation;

The two factors that accounts for increased rate of chemical reaction when temperature is increased are:

Energy factor; enough energy in the collision for the formation of an activated complex, where bonds are breaking and new ones forming. When temperature is increased, a greater number of molecular collisions possess enough energy to activate the reaction.Frequency of collisions increases; an increase in temperature makes particles move faster and collide more frequently, increasing the possibility of a reaction be-tween them.

More important factor; Energy factor is more important.