An experiment similar to the one performed was done in order to determine the Ksp of Ba(OH)z: In this instance, a strong acid, HCI is placed in the buret and a titr...

You choose to investigate some of the solubility guidelines for two ions not listed in Table $4.1,$ the chromate ion $\left(\mathrm{CrO}_{4}^{2-}\right)$ and the oxalate ion $\left(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\right) .$ You are given 0.01 $\mathrm{M}$
solutions $(\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D})$ of four water-soluble salts:
When these solutions are mixed, the following observations are made:
(a) Write a net ionic equation for the reaction that occurs in each of the experiments. (b) Identify the precipitate formed, if any, in each of the experiments.

In this group. One analysis a student ad that sale as it a non solution to make fear is equal to 0.15 10 and some people to participate. Have we calculate the concentration off T V two positive remaining in resolution. So here the giving is dead solution the given his dad here negatively called tau 0.1 place and and at C l is a strong Is it it completely disassociates here eps hand is a strong Is it it completely? She says those years eso the hair decoration is sad at CNN react with each tool and it gives edge positive c l negative. And here as positive 0.15 a m and for cnegative is also 0.15 a m. Yeah, No yeah. We know the aggression that get SP or BBC two is equal to T V two positive feel negative photo now putting the value in the creation of report the valued at 2.5 into Okay, 2.4 multiplied by 10 to the power minus four is equal toe t V two positive do 2.14 to now. Here we calculate Phoebe we're simplifying this aggression. Find people to positive. Here it will be 2.4 multiplied by 10 to the power minus four, divided by 0.21 plane square. Andi By calculating all the even simplifying these here we get the value. T V two positive is 1.6 multiplied by tend to dip our minus two. Um so this is the compared solution off The answer step by step in detail is go through his hair. I think this is given the serial negative 0.15 them. And we know that there is a strong is it is completely dissociates and has the creation of that sell this one which gives as president c l negative in her 60 point plan one time all and we know the occasional KSB off BBC l two will be equal to people to positive and c l negative Whole square on by putting the values in the equation, have you find the value PB toe positive that is 1.6 multiplied by can depart minus two and

Loved ones is Ricky. And today working on a problem. Then pretend on. We have to use the solid ability rules to determine if he equilibrium Constant for two reactions is greater than most. Center here about equal to one. So for our 1st 1 you have calcium carbonate, aids conform calcium less carbonates. And, um, what we see is that aware equal a brown or cake you was equal to concentration of calcium times, concentration, apartment age. Hi. And because, uh, carbonates are insoluble rk hugh is most likely going to be less than one. Yeah, because casting carbonate is insoluble in water and so we don't build form I owns. All right, So our next equation iss be Yes, three barium plus two phosphates minus two. Makes be a three p o for two. And we have a program Constant cake. You of one over B a huge range phosphate squared. And so because barium phosphate or because phosphates Aaron soluble in water lava cake you. But it's greater than one. So I hope this video is helpful. See you on the next one

Inebriation off our mixture off sodium hydroxide and Magnus she, um, chloride. The possible precipitated that can reform this magnesium hydroxide. So if the precipitate will form or not, that's it. Depend on the relation our variation Kocian Velo form ignition hydroxide to its scarce be velo. So if the creation caution well is greater than the case Provolone form ignition. I had drug site then Ah, this will for the r dissemination hydroxide will be formed as a precipitated. So to find that Cuba, we have to know that concentration of magnus amount and way down in the mixture. So three the initial concentration here for sodium or the hydra surround You know that we have toe we're given the b o h velo for the sodium hydroxide is DuPont five eight that men's um and ah which minus concentration will be the negative flow. Now r the ten to the poor minus stupor in five. As the peerage means the negative log off hydroxide ion concentration And so this will be. And if we just solve it we'LL find the valorous two point six three times ten to the power minus three Mueller So this is the concentration our initial continent overhead rocks around and then we're given and the Magnus in glory solution. Consolation is your open zero on it. And since from one McNish in grade, we will have one McNish in ion. That means the concentration of the magnificient parade is the initial concentration of Magnus Sherman also. So the concentration off empty two plus will be syrup aren't zero one eight Mueller. Now this air about the initial consultation of hydro surrounded and YouTube, lasagne and sins, we're mixing toe different volumes from the solutions we have to find out their final concentrations. So we're adding, So we have to find this from the formal off. One few on is goingto himto Vito. So let's first do it for the hydro surround. So if em one is hydrocodone, initial concentration villain is its initial volume and came to is the final concentration and veto is the local William the solution that monsieur to solve it for himto are em two for oi each miners that will be. They want everyone over it too. And here in one is the initial initial consolation off which minus which is two point six three time into our miners three and the initial volume for which menaces seventy five ml. As you're adding seventy five level of sodium hydroxide and the Vito here is the total solution volume now which is seventy five plus one. Twenty five that ms two hundred ml and it is Solve this. We'LL find the empty Vela's nine point six eight six times ten to the power minus for molars Oyj minus. So this is the final confirmation of hydro sarin. And then in the same way, we can solve the final concentration off magnification ion which will be the initial concentration of mag Mission Man as zero planned zero one eight and then we have the initial follow him as one twenty five Mueller and the feet is the total volume two hundred ml Then we'LL have the final empty two plus concentration as one point one toe five times tentative are minus three Mueller This is the final consolation for engine two plus. Now we know that both the hydro Syrians final concentration and Magnus humans final concentration Now the creation caution formula for a compound off am X m is, um and X n from that will have in Minas Oh, and plus I am. And then we have X A minor is sort of the bar in So here are our formula for ammunition hundred cities M g O h too see if we just use our the compact this formula to this we'LL have our reaction Kocian value form ignition hydroxide as, um engine two plus times which miners and tell me this square for this too. And if we just put the final concentrations value's off magnification And had you said ion in this formula will happen, I should caution value off one point one times territory minus nineteen And now if we find the case p Vallo form ignition Hydra, aside from a table will see that the values to point all six times ten to the poor minus thirteen So happened it from here in the queue Velo for my nation my decide is greater than the case be velo And as they have already said, that if the queue va loom is greater than in that case be fellow that men's the com bone will form a precipitated That means in this reaction are in mixture mg oyster magnesium hydroxide will be precipitated

So for part a the equilibrium constant expression is going to be equal to the product of the concentration of calcium two plus n. c. 0. 3 to-. We don't put anything on the bottom because the reaction is a solid and solids don't show up in the equilibrium expression now because uh this calcium carbonate solid is relatively insoluble. The reactions are going to be favored here relative to the product. Which means that the equilibrium constant is going to be a number less than one. For part B. On the top we're going to have the product which is a solid. So that doesn't show up. We'll just put a one and then on the bottom we have the concentration of the A. Two plus. Since the coefficient is three, we will keep this and then P. 04 three minus. And the coalition of two indicates that will square it. And barium phosphate is relatively insoluble as well. So the solid is going to be favored in this case, the solid is the product. And when products are favored, the equilibrium constant is going to be a number greater than one.