A student is curious about the Ksp value for NaCl. The student looks up the value om the appendix of his textbook but cannot find a value for NaCl. Why not?

The solubility product Ksp is mostly listed for substances that have very little solubility in water.

Ksp is an equilibrium constant that shows the degree to which a substance dissolves in water to form its ions. Given a hypothetical ionic substance AX which dissociates in solution as follows;

AX(s) ⇄ A^+(aq) + X^-(aq)

The Ksp of the substance therefore is;

Ksp = [A^+] [X^-]

The Ksp of substances is very important for substances that are slightly or sparingly soluble in water. The Ksp of highly soluble substances such as NaCl is often not listed in literature.

Learn more: link

Given :

The student looks up the value of the appendix of his textbook but cannot find a value for NaCl.

To Find :

Why the Ksp of NaCl is not present .

Solution :

Ksp values are given for those compounds which are partially soluble or insoluble in water .

But , we know NaCl is strong electrolyte and it completely dissociated in water .

So , the reaction go forward and their is no need to calculate Ksp .

Therefore , the Ksp of NaCl is not present .

Hence , this is the required solution .

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

the correct answer is:

a. formation of precipitation