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Data Sheet You will turn in this page. Standardized NaOH sqk} concentration: 0.1156_ M (from the previous week's lab) Trial 1 Trial 2 Trial 3Unknown mixture sa...

Question

Data Sheet You will turn in this page. Standardized NaOH sqk} concentration: 0.1156_ M (from the previous week's lab) Trial 1 Trial 2 Trial 3Unknown mixture sample mass0.99791.00151.0004Final buet reading (0.01 place) Initial buret reading (0.01 place)11.25 mL9.501 mL12.05 mL34.65 mL33.10 mL35.55 mLNaOH volume deliveredmLmLmLCalculations Reaction equation:Moles of NaQHused in the titration:Trial 1:Trial 2:Trial 3:Mass of KHP neutralized:Trial 1:Trial 2:Trial 3:Percent KHPin the sample:Trial

Data Sheet You will turn in this page. Standardized NaOH sqk} concentration: 0.1156_ M (from the previous week's lab) Trial 1 Trial 2 Trial 3 Unknown mixture sample mass 0.9979 1.0015 1.0004 Final buet reading (0.01 place) Initial buret reading (0.01 place) 11.25 mL 9.501 mL 12.05 mL 34.65 mL 33.10 mL 35.55 mL NaOH volume delivered mL mL mL Calculations Reaction equation: Moles of NaQHused in the titration: Trial 1: Trial 2: Trial 3: Mass of KHP neutralized: Trial 1: Trial 2: Trial 3: Percent KHPin the sample: Trial 1: Trial 2: Trial 3: Average percent KHPin sample:



Answers

A solution of sodium hydroxide is standardized against potassium hydrogen phthalate. From the following data, calculate the molarity of the $\mathrm{NaOH}$ solution. mass of KHP $\quad 0.5536 \mathrm{~g}$ buret reading before titration $0.23 \mathrm{~mL}$ buret reading after titration $37.26 \mathrm{~mL}$

In this problem, we have to find out the reaction in question for the standard edition of sodium hydroxide. Solution by training with Case Appeared up Ah, potassium, hydrogen peach. Tell it it wasn't on a scared B. And then we have to find the concentration on the sodium hydroxide solution at the coolness point as you're given the mass of the case we required for the volume of sodium hydroxide. Silas first right, the reaction in question here, where we have sodium hydroxide in a quiz condition will react to it. Um, the HP and in the product will have sodium ion plus the Potter Sherman plus on in the C eight age for or for minor sound plus water. So this is the creation equation for the standardization of sodium hydroxide GHB, and it's setting. But we have to find a concentration of the sodium hydroxide where we had given the mass ofthe Gage B. Much is zero pond five five to seven gram, and we have to find the concept of sodium hydroxide and they give us point for dead. We need to know the number of most of sodium hydroxide equivalent splint, and we have already given the volume of the sodium hydroxide. So first we have to find the number ofthe malls ofthe cage be using this mass and that, as you know, the Julian's point, they doubled the number of malls off the Thai trend and that I created. The solution is equal. That means the number of most of Cage and the unit's point will be called to the number of most of sodium hydroxide. And using that, we'LL be able to find the consolation of sodium hydroxide. So to find the number of malls ofthe case before us to have to know that Mueller Mass ofthe case P and which is to a four point two two grandpa are more now if you just If he has divide the massive cage B by the molar mass of case, we will know the number of malls off K H P. Wait, no. So this fellow over these Velu will give us the number of malls, which is zero point zero zero two seven. This is a number of most of case be and, as you say that the Cuban its point, the number of most of case will be called to the number of most of sodium hydroxide, and this is a number of most of sodium hydroxide, and they could respond also. Now, if we just divide this by the volume of the sodium hydroxide, we will get the concentration of the sodium hydroxide and documents point. So the concentration of sodium hydroxide and a curious point will be, ah, the number of morals we have just calculated, which is surprising to seven over them. Volume, which is zero point zero to five. Six seven later, as you have given our identify as it given the volume as twenty five point excellent militar. So that will be part of the auto. Five eight seven later, and the result will be Who's Sarah? Point zero one four six Smaller? No, it's one zero four six zero point one. Therefore, see smaller. So this is the concept of another sodium hydroxide, and they go in his spine

I know it will answer this question. Right? An equation between subhuman Duke side and K H B Hey, Jimmy is protest Imogen facility and they give us its formula, so we know rise early, actually. Twinkie HB blast In a new age, the reaction is so easy which what happened is the H Goto, which and the former water and any communist it off a Toby saw potassium sodium FISA late disease. We need this song or this is serving water. Be fizzling. Negative to blast cable Still lost in a post it. So it's no Covalin combat. It's a unique bond unit. Monstrous elite Last Persian Blaster Yeah, is a patrician off open 55 to 7 graham off GHB required toe 25.87 million it off. No edge to reach in violent. So what? Concentration of in origin? Easy here. The cage containing only one broken. So we can deliver using a number of more normal art so we can see that is the morning equivalent off key. Each being equals the moon off. So do my drink Sign Why? I said moon with its a equivalent but snow day from because it's contained only one reacting and this continually one we have. The number of moon is away divided by the molecular away and here's the moon. We can move in the book Similarity times The volume by lead Zavala Me given for us is 25 buoyant 87 times inviting negative three litre similarity. We want a is the wait. He's all going 55 to 7. Then we'll be clearer. We using is a formula and the periodic table. It will be to Serena in place here we'll be toe boy in four point toe so we can create similarity which will be using these air calculator. It will be nearly oh, buoyant one morning at it, I think.

Hello. But this is uh the balanced chemical reaction for what is going on. So we can calculate the mole of GHP. Which is to go to the mass of Malema's. The mass was given us 0.0 sorry 0.1082 And of course the mullahs mass just get the individual mass. Individual mullah masses. Sorry for potassium for hydrogen endeavor phosphorus they just add them up. These are just constant. Okay that's gonna give you 204.22 So if you divide it you're gonna get this citizen number of most of PHP. Okay now when you have this expression right here the more ratio is gonna be one is 21 everywhere. Right? So you have one more PHP being neutralized by one mole of sodium hydroxide. Okay because this one is the one right? Therefore what would this give you the one? We just come with? The albeit is equivalent? So because the 1 to 1 ratio is gonna be the same thing for sodium hydroxide. So the number of moles of sodium hydroxide is also 10.5 to 9. Okay, Because the more ratio is one is one, of course, once you have that there is a similarity with, the similarity is the number of most of the volume, volume uh, steady four by 67 military. Okay. So you're gonna find the modularity and this is gonna be our final answer for the modularity of sodium hydroxide. Okay, thank you very much.

Chapter six Problem 80 tells us about a reaction between sodium hydroxide and the molecule K H P. So we have sodium hydroxide reacting with K H P. And we're told that K HP has one acidic hydrogen. So we have 10 h i on from any ohh reacting with one acidic hydrogen, giving us each to oh, and since we have one of each of thes, we know that our equation is balanced or that any wage and K H P have a 1 to 1 relationship. So we're given some information about K, H, P and about the amount of sodium hydroxide, and we want to know the polarity of sodium hydroxide. So whether we can solve this is converting the grams of Cage P two moles of Cage P. Then, since one mole of K H P is equivalent to one mole of Joh will have the most of any away from there. Finally, we'll do moles divided by leaders of a nail each to get our mill Araji. So let's begin. We're starting out with K H P. And we know that we have 0.10 82 Gramps, we're given the molar Mass here, where one mole is equivalent to 204.22 grams. So that gives us 0.53 moles. Remember that this is also equivalent to the moles of any O. H. So to get the polarity of any Ohh, we'll take the number of moles and divide with a number of leaders, which in this case, 0.3467 That gives us our final polarity of 0.15 Moeller.


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