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RESULTSComplete your lab summary or write report (as instructed)nOH" (each titration). nOH - (titration)average [OH-Jare (filtrate). Ky (average) with cror Sam...

Question

RESULTSComplete your lab summary or write report (as instructed)nOH" (each titration). nOH - (titration)average [OH-Jare (filtrate). Ky (average) with cror Sample Calculations titrated moles of hydroxide average hydroxide concentration in aliquot solubility product enor analysis Discussion/Conclusions Discuss what You found out and how; for each part Compare the solubility product with the literature value including possible reasons for differences. How good are the method you used to deter

RESULTS Complete your lab summary or write report (as instructed) nOH" (each titration). nOH - (titration)average [OH-Jare (filtrate). Ky (average) with cror Sample Calculations titrated moles of hydroxide average hydroxide concentration in aliquot solubility product enor analysis Discussion/Conclusions Discuss what You found out and how; for each part Compare the solubility product with the literature value including possible reasons for differences. How good are the method you used to determine your solubility product? ~four results



Answers

Have each group member look up the Ksp for a different compound. Calculate the molar solubility. Do the numerical values suggest that the compound is soluble or insoluble? Compare answers with the solubility rules from Chapter 8, and have each group member present his or her findings to the group.

So in this problem where what we have to do is first you have to find out the balanced equation for its operation Given. And from there we'LL have to find out The overall Arik equation, based on on the sole ability of the off the substances of the compound, is presenting its creation. And from there we'LL have to find out the Net on immigration for fusion. So here is our first creation, which is between the any to Cyril for an image for a city off for so the products will be any to sito foreign an edge for to sear off for and the information based on which were writing all of these air equals is based on their solidarity in akwa solution. So if we look at the Celebrities Church which is provided also in the book, we'LL see that all the sodium and and it's for comm bones are usually so level and water, and also from the result condition of destruction were given that no precipitate was formed in this creation. That means all the compounds present in the reaction mixture are in a quiz and there is no solid, which is formed as the precipitate industry ation that so did this's are balanced reaction equation and from American right down the overnight the Over an icky question, which will be not doing a plus class zero for two minors. Oh, Nicholas, plus toe in age for press Bless C two four to minors and all. They give us two. In a plus ackwards proceed toe over for two minors off your sack wass glass and for no to manage for, plus ankles and sear Oh, for two minus equals. So this is the overall anarchy question for this rations, and we know that if we have and it's solid farming this relation. In that case, we can just I got out the spectators from both side of the rationing cushion where decent there is no solid farm and there is not precipitated. That means it's over. And the question is the NATO immigration for registration also. So this is our nanny equation for this relation. Now we'LL go to our second one where and it was zero for is reacting with it's, you know, three toe form in an artery and eighty to Sarah for so in the result condition for this year said that there's a red ah solider there. It presented his farm. So we turn off these two compounds or precipitate. We can identify them by the solu ability. Off, at least once is we turn to know the servant of sear off for from the silvery chart. But we know that all the night craves our salute will in water and also the alkali metal composed of solid water. That means obviously this is soluble in water. And that's why the under compound, which is the eighty to sear Oh, for will be alarmed solid precipitated Ah, off for ministry action. So this is our passivity eighty two Sierra friend there So you have written it in the solid form. So now for writing the net on immigration in a creation which has asserted precipitate what we have to do is we can ignore the components of the irons which air in a course acquis condition in both side of the reaction equation. So from here, you can see that see, the sodium and night rid is an AC wa's in both side of the reaction. That means these are suspected rounds in this racially question on weaken just our meet them and we can write down the need. Any question just by writing, Um, the on immigration for Ciro for minus and edgy. Plus, who's you're forming? A solid Come on industry action. So the NATO and education for destruction will be C R O for two minors. Jack was bless ah to Luigi Press. And this will give us aged to see are off for Sorry. So this is the net. Any equation for this reaction? Now we go to our next one. So here what we have is an address zero for is reacting with CSL boat operators and a seal and C zero for so from the federation condition off this one were given that a yellow precipitous formed and again we will identify which one can be our precipitated here. So from here you can see that sodium chloride is alkali metal compound and which is off obviously soluble in water. That thesis cannot be our solid precipitated. That means the other company form CS here. Oh, for will be the precipitated which is formed as the university did. That's like we'LL write this one as are solid and this is our solid person voted, which is formed in this reaction. Now I'm going to write down the balanced equation will just ignore all meet on the ions which are present in a quiz condition on both sides for Americans. See, their sodium and chlorine are present in a quiz condition on both sides and calcium and sear. All four are reacting to form this year zero for in the precipitated for solid form. So we just write down them to find out our NATO an equation. So the net on any questions here Oh four to minors is reacting with See it two plus to give us see if cr oh four in solid form. So this is the neuron immigration for this reaction? No, I'm off guard. Next problem. So from here we can see that Inish for dosage or for is creating with silver knighted to give us an edge for no tree and energy to see two or four And from the nation condition of this one were given that and white Percival his form And again we will identify who journeys are precipitate first. So we know that all the nitrous nitric compounds is soluble in water and also the ammonium compounds air saluted water. That means ammonium nitrate is obviously soluble in water and it cannot be or so president That was the other compound farmed. We've been the solid form and this silver percival it which is formed in this reaction. That means this is easy to see her. Oh, for his heir precipitate. Here and again we'LL just write down the net and equation by ignoring the ions which are presenting a quiz form in both side of the reaction in question. In this case, these are nitrate and the night and ammonium ion, nitric and ammonium dieser present in equals in both sides. So we just ignored them and write the NATO aggression by writing down the other islands of the compound. So the night on a cushion will be cto for to minors blouse too edgy Plus which will give us agent too Cito for in solid form. So this is the Nate energy question for this reaction. Now we'LL go to our next one. So in this case, we have been his photo city overreacting Asi asi alto tow for manage for Syrians See Sudo for and once singing In this case, we have another white respected on DH again. So an itch for seal is a compound ofthe ammonia, my own and which is obviously soluble in water. As you know that almost all are all vanished. For composers, Sullivan in water that was thiss cannot be our precipitated. That means obvious choices. CSCO for witches are sorry preceded forming this reaction. So the NATO and immigration will be just variation ofthe kill Sherman. See two or four to form this. Yes, it's over. So the NATO, in addition, will be sitio for two minors class. See it two plus tto. Give us he c too. Oh, for in solid form. So this is the note and a key question for registration. And finally we have Still, when I graduated with calcium chloride to produce you see it and CNN three two again, we have to find out which one is our precipitate here. So as you know that all the night great composers sellable that this's soluble in water and it cannot be our sort of person haters. So the other component which is the seal, is the solid person weight which is farmed. That Mr Nate Annie question will include only silver and chlorine in the reactor center agency around the product side. So the reaction other Nate Meineke question will be too edgy. Plus, fellas. Ah, to seal miners, Give us two. It is here as the salad. So this is the net. An equation for discretion. Now, in the second part of this questionnaire were asked to identify the precipitating, forming each of the experiment we should have already done. But we just recap it. So in this reaction, our sorry persuaded formless it is hell. Now, in the previous one hour, precipitated is or the in the fifth creation or personalities CSC two or four in the four creation. Our personalities aged two c two four in our target ation are possibilities. Si asi our all for in the second one. Our president is Eiji to sear Oh four and the first one. We don't have any sort of physically that formed

To figure out the concentration of potassium hydroxide in an acquis sample. There are several steps that you would follow by performing a tie Trey shin. First, you would take a known volume, but you would have measured of your potassium hydroxide solution and place it into a beaker. For example, you take 100 mL or 1000.1 leaders. It would then take Obure aet that contains an acid that would react with the potassium hydroxide, such as hydrochloric acid. It would have a known concentration se 0.1 Moeller. You would then add the hydrochloric acid to the potassium hydroxide until the indicator changed color, which would tell you when to stop. This would correspond to a stoy geometric amount of hydrochloric acid that would have been added to completely neutralize the potassium hydroxide. You would then measure the volume of hydrochloric acid required to neutralize the potassium hydroxide. Then, knowing the volume of hydrochloric acid and its concentration, you can calculate the moles of hydrochloric acid required to neutralize the potassium hydroxide. Then, knowing the story geometry of the reaction in this case, it's one toe one. The moles of hydrochloric acid added, would equal the moles of potassium hydroxide that was present. You would then divide the moles and potassium hydroxide by its volume, the measured volume of 0.1 leaders in order to determine the concentration of potassium hydroxide.

In question 11. We have a mole ursula ability of cobalt two hydroxide at 5.4 times 10 to the negative six moller in pure water. The kospi value can be calculated from Mueller scalability. Recognise him that KSB for Cobalt two hydroxide is the cobalt concentration multiplied by the hydroxide concentration squared because we get one mould cobalt for everyone more cobalt two hydroxide. Then the cobalt concentration is equal to Mueller sell ability. But because we get twice as much hydroxide Mueller scalability are sorry, the hydroxide concentration is equal to two times the Mueller scalability. Knowing this, we can solve for K. S. P. By plugging in s for the cobalt concentration and to s for the hydroxide concentration. The s value is provided, it's 54 times 10 to the -6. So we get a K. s. p. value of 6.3 times 10 to the -16. Now, knowing the K. S. P. Value and knowing the ph of the solution, we consult for the cobalt concentration which again will be equal to the Mueller cell viability with a ph will first solve for the hydroxide concentration by taking 10 to the negative ph which gives us the hydro Nehemiah concentration, dividing that indicate W which then gives us the hydroxide concentration and we square it in the KsB expression Rearrangement then gives us a cobalt concentration which is the solar cell viability of 87 times 10 to the -9 moller. You'll notice that this value is less than the 5.4 times 10 to the -6. And pure water due to the common ion effect, the common ion being hydroxide in this case.

Business Question three from Chapter 11 Section three And it's all about writing a lab report for Boyle's law. So Boyle's law is pressure times. Brilliant. This sequel to K or a constant or pressure is equal to the constant times run over rolling for the inverse of role Yah. Okay, so Boyle's law demonstrates the inverse relationship between volume and pressure. So the lab wanted you to craft pressure and the inverse eh? Volume. I see what that looks like on the graph. So we're going to draw a graph. So on the x axis, we're gonna have the inverse of volume said one over V in no leaders and and why Access would have pressure and that is gonna be in pounds over inches squared. Okay, so we know that pressure and volume are inverse relationship. So if pressure was decreasing, Bollywood increase or pressure's increasing volume will decrease. But since the X axis is asking for the inverse of all Hume, this is actually going to have a direct relationship to the line is gonna be a straight line. So what were you doing this? Sometimes you get a lab report. There are some experimental errors that can happen. So when you're looking on this lab report, you can't expect maybe some human error or airs by random chance.


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