5. What is the solubility product expression for the solution of barium carbonate in water?...

Write the solubility product expression for the ionic compound $\mathrm{A}_{x} \mathrm{B}_{\mathrm{y}}$

So the song ability product constant which is breathing too to K sp is our equilibrium expression for a chemical equation where this finally wrap sense, the soul, the ability of an ionic compound. So now that we have defined the soul ability product constant, we can take a look at what can happen if we change our chaos. P value. So if we have a large K SP, then the compound is soluble on the forward reaction is favored. Whereas if we have a small chaos, p value than the compound is not soluble Anne, back quids reaction will be favored instead.

So hard water is the term that we use when water contains dissolved minerals in very high concentrations. So the degree of hardness is directly related to the concentration of these minerals, and we can measure this in parts per million. That's abbreviated to PPM. So hard water is found when water accumulates the deposits of limestone or chalk. So the use of hard water causes adverse health effects. Soaps usually do not work well with hard water, and so when so it is used in hard water, it can react without calcium, magnesium and iron irons to form an insoluble precipitate. Therefore our water softeners are used to remove the minerals which make the water hard. So, for example, are carbonate. Iron can react with magnesium ions and remove are insoluble precipitate. So for example, we have MG two clubs At CO 3 to minus this yield MGC 03 as a solid. So MGC 03 is insoluble precipitate, which is removed from the water to make it soft.

The first thing to do in this question is to write out your reaction. So here we have copper one sulfide, so see you to us. Solid will dissolve to two copper plus a quiz plus s to minus Equus. Now we can set up our K equation that says K is equal to your copper plus concentration squared times you're s to minus concentration. Now it tells us that the soluble ity of this is 8.5 times 10 to the negative 17th Moeller. No, that means that this is one of two multiplied by two for the copper. Because there's a two out here, so we find that K is equal. Thio two times 8.5 times 10 to the negative. 17th squared times 8.5 times 10 to the negative 17th. When you actually worked this through, you will find that your K value is 2.5 times 10 to the negative 48th and that is your final answer.

So now we'LL work on problem twenty from chapter seventeen. So the problem here is what is Mueller Sally ability. And how can you get Melissa liability from K S. P. So Mueller sally ability is a a measure of the SAI ability of the compound in moles per leader. Okay, so to get to Mueller soluble ity from K S P, we have tio make a nice table. So just teo be able to show this. Um, clearly, I'll use an example so we can have silver chloride which in solution willbe an equilibrium with silver plus and seal minus. So here the we don't take into account the solid and then we initially have none of the ions and solution, and then we add s for an equilibrium of Tess. And so once we have this, So we're assuming we know K s P because that's what the problem ask us. So if we have, if we know Caspian weakens that caspi equal to s squared, so products over react insp. But in this case, we're not taking into account the reactant and so s our moller soluble ity is equal to the square root of K s p. This expression here does not hold true for every system. It just holds true in this case because of the one to one ratio here with our ions. But this is the strategy that we would used to find it in any situation.