5

Astudent performs a titration Of 44.0 mL of a phosphoric acid (HyPOa) solution %f unknown concentration with a standardized 1.25 M NaoH solution The titration requi...

Question

Astudent performs a titration Of 44.0 mL of a phosphoric acid (HyPOa) solution %f unknown concentration with a standardized 1.25 M NaoH solution The titration requires 26.2 mL of base to reach the third equivalence point: What is the concentration of the HPOngolution?

Astudent performs a titration Of 44.0 mL of a phosphoric acid (HyPOa) solution %f unknown concentration with a standardized 1.25 M NaoH solution The titration requires 26.2 mL of base to reach the third equivalence point: What is the concentration of the HPOngolution?



Answers

In an acid-base titration, 45.78 $\mathrm{mL}$ of a sulfuric acid
solution is titrated to the end point by 74.30 $\mathrm{mL}$ of
0.4388 $\mathrm{M}$ sodium hydroxide solution. What is the
molarity of the $\mathrm{H}_{2} \mathrm{SO}_{4}$ solution?

So now we're gonna work the problem. 61 from chapter eight in this problem, were asked about how much Clark asset would be required, er, to trade a certain volume in concentration of sodium hydroxide to reach the equivalence are we know the amount of volume, but we want to know the concentration. And there were provided the reaction which we can reproduce here. So we have a cleric acid H C low for reacting with sodium hydroxide to produce water and and a sodium per glory in a c l 04 Now this reaction is important just so we can know the story commission ratio between reactive. So we're given the volume and concentration of sodium hydroxide so we can multiply those together to get the moles of sodium hydroxide. So you have 0.2000 moles of in a wage her leader. So we multiply by leaders, we get zero. We have 22.62 milliliters. So 0.2262 leaders. So that gives us mold of sodium hydroxide so we can multiply by our ratio here. So one mole of uh, h c l 04 to one mole of sodium hydroxide, so that will give us moles of Clark acid. And now we just want to know the concentration. So we're given the volume so we divide by the volume. So we get 0.2500 leaders, which is the same as 25 milliliters. And then so you can see that well, Ophuls sodium hydroxide cancels, leaders, cancels. And then we have moles of Clark acid over volume, which is able to polarity. So when we do this re a calculation, we get 0.18 10 malaria H c l 04 his our answer.

Question 66 is a strong acid, strong base titrate Asian calculation. So we need to know the story geometry of the Thai tray shin reaction in order to perform this calculation well, right. The caesium hydroxide reacting with nitric acid producing water and cesium nitrate, and we'll see that it is balanced as is and we no longer need. We don't need coefficients other than one to calculate the molar ity of caesium hydroxide solution. Polarity is equal to mold caesium hydroxide divided by leader solution. We already know the leader solution. It's a 25 mL solution of caesium hydroxide, or 250.25 leaders, so we have to calculate the moles caesium hydroxide. We can get the mold caesium hydroxide by starting with the volume of nitric acid 35.27 mil leaders or 0.35 to 7 leaders. We multiply that by the molar ity of nitric acid to get the moles nitric acid. We then look at the Stoke Eom, a tree of the balanced reaction and we see that one mole nitric acid reacts with one mole caesium hydroxide. Now we have moles, caesium hydroxide, all we need to do is divide this by the leaders caesium hydroxide, 25 mL, or 250.0 to 500 leaders, and we get a concentration of caesium hydroxide of 5000.1498 Moeller.

To calculate the concentration of the phosphoric acid solution after it has well, we first need to know the amount of sodium hydroxide that will react with the phosphoric acid. We do know a volume, and we do know a concentration. But in addition, we need to know the story geometry of the balance, chemical reaction. So let's write that first, we have phosphoric acid reacted with sodium hydroxide, producing sodium phosphate and water to balance that, we need to put a three in front of the hydroxide. I'm sorry, the sodium hydroxide, so that we get our three sodium over here. In the process, we just added more hydroxide, so we're going to need to put a three in front of our water also. But what's important here is the three moles of sodium hydroxide reacting with one mole of phosphoric acid. To calculate the concentration of phosphoric acid, we need to know the moles of phosphoric acid, and we need to know the leaders of the phosphoric acid solution. We weren't given the leaders. We were given Miller leaders, but we can easily convert the middle leaders into leaders. We're going to have to calculate the moles of phosphoric acid from the information associated with sodium hydroxide. 7.12 mL of the sodium hydroxide solution reacted with 5 mL of phosphoric acid. We can convert the milliliters into leaders by dividing by 1000 and then convert the leaders of the sodium hydroxide into mole sodium hydroxide by multiplying by the molar ity of the sodium hydroxide solution. Now that we have mold sodium hydroxide, we can convert the mold sodium hydroxide into molds. Phosphoric acid, Recognizing there is a three toe one relationship. Now that we have moles, phosphoric acid, we simply need to divide by the leaders of the phosphoric acid solution. Five million leaders with the information given which we can convert toe leaders by dividing by 1000. This then gives us a phosphoric acid concentration of 0.517 Moeller

So in this case we are asked to find the equivalence point of a penetration. Uh so uh necessarily the first one is kind of chemical reaction that stay in place. So this is just a simple uh acid base reaction. We're we're taking cesium hydroxide and we react with nitric acid which is a chain of three. And it leads to the production of water and caesium nitrate, Which is nitrate, which is c. s. n. 0. 3. So it is one is to one. So there's one more of cesium hydroxide Is going to react with one more of Hmm three. So in this case therefore you can use the simple uh calculation where we take the concentration in terms of motor that is mold or letter. And if you want to fly eight, I don't want you so envy of one of the competence is equal to end. Thanks V. Of the other. Confidence. Always like to say a movie even it was MTV two. You can decide what's what. So let's say RM would be even is cesium hydroxide here. Right. Let's put cesium hydroxide here And that's what HN. here. So let's see what do we know? So we do not know the concentration of potassium hydroxide. So I'm going to put it as in Well, we know the volume of ccm hydroxide. Just 25 km is equal to, I mean theoretically were divided but allows them to get it in liters and all that stuff. But you don't really need. It is equal to the let's see what do we know about? Hmm three. We know the morality. So 106, 2 in multiple later times I want you Which is 35.27 mm separate divide both sides by 25 millilitres, I will be able to calculate the concentration of the cT um, hydroxide solution As .106, 2 times 35.27, divided by 25, which works out to be approximately .15 More 4.15 multiple.


Similar Solved Questions

5 answers
Net ionic equation for NaHSOa and HzO
Net ionic equation for NaHSOa and HzO...
5 answers
Tnc[4 followine intecnl ot Lhve nindutu IactetbleActGdJetuJcerUmuEvaluate the follow ing definite integrai[7 Use grphing utility check your answct:E+JN E J 63
tnc[4 followine intecnl ot Lhve nindutu Iactetble Act Gd Jetu Jcer Umu Evaluate the follow ing definite integrai [7 Use grphing utility check your answct: E+ JN E J 63...
5 answers
Determine whether each of these sets is countable or uncountable. For those that are countable, exhibit a one-toone correspondence between the set of natural numbers and that set.a) the integers greater than 10b) the odd negative integersc) the real numbers between 0 and 2d) integers that are multiples of 10
Determine whether each of these sets is countable or uncountable. For those that are countable, exhibit a one-toone correspondence between the set of natural numbers and that set. a) the integers greater than 10 b) the odd negative integers c) the real numbers between 0 and 2 d) integers that are mu...
5 answers
A 9.32-g sample of potassium chlorate was decomposed according to thefollowing equation2KCIO32KCI + 302How many moles of oxygen ?are formedmol 0.1141mol 0.0234mol 0.0774mol 0.0443
A 9.32-g sample of potassium chlorate was decomposed according to thefollowing equation 2KCIO3 2KCI + 302 How many moles of oxygen ?are formed mol 0.1141 mol 0.0234 mol 0.0774 mol 0.0443...
5 answers
Propose and explain the mechanism for the following reactionCHsH3C_HzC-=CHCH,CHzCHCCH3HzSO4CH3CHaH3COH
Propose and explain the mechanism for the following reaction CHs H3C_ HzC-=CHCH,CHzCH CCH3 HzSO4 CH3 CHa H3C OH...
5 answers
How many moles of argon are in 27.7 g of argon?27.7 g 05TOOLS xio
How many moles of argon are in 27.7 g of argon? 27.7 g 05 TOOLS xio...
5 answers
Rouc Conslarte Pcriodic TabloCalcuete The Iina temparature dborees Celsius tnejollcwino and * nci change:4 samole Of*enon 4as-and &2. mmIg cocledpresse560, mmHe. answierto Iwo significant figuros and include the appropriate units,ExpressValueUnitsSubmitReques AnswerPart4tenkgas with preasure0.920 atmheatedFre3surE1250 TortExpress your answicrIhree significant ligures and includo the appropriate unils_ValueUnitsSubmitReques Anbwer
Rouc Conslarte Pcriodic Tablo Calcuete The Iina temparature dborees Celsius tnejollcwino and * nci change: 4 samole Of*enon 4as- and &2. mmIg cocled presse 560, mmHe. answierto Iwo significant figuros and include the appropriate units, Express Value Units Submit Reques Answer Part 4tenk gas with...
5 answers
21. fevidx22. f sin? x cos? x dx23. f sin? x dx24.f sin3 x dx25. fxcos? x dx26. fxcosx dx27. f sin Vx dx28. fxcos(x2) dx29.cosdx30. Jx cos x dx
21. fevidx 22. f sin? x cos? x dx 23. f sin? x dx 24. f sin3 x dx 25. fxcos? x dx 26. fxcosx dx 27. f sin Vx dx 28. fxcos(x2) dx 29. cos dx 30. Jx cos x dx...
5 answers
Kastion spontaneous? How can an endothermic reaction make non- ~sponlaneous reaction Thermodynamicall what can be donc t0 moleculnt urtf be made spontaneous? Inat 'increnses Anol J(1zp4 Paragraph
Kastion spontaneous? How can an endothermic reaction make non- ~sponlaneous reaction Thermodynamicall what can be donc t0 moleculnt urtf be made spontaneous? Inat 'increnses Anol J(1zp4 Paragraph...
5 answers
Find the coordinates of the point at which the tangents at the end points of the beam, which is at a 60-degree angle with the prime axis at the focal point of the Y²=4x parabola, intersect.
find the coordinates of the point at which the tangents at the end points of the beam, which is at a 60-degree angle with the prime axis at the focal point of the Y²=4x parabola, intersect....
5 answers
If arachidonic acid enters into the beta-oxidation of fattyacids, how many cycles it has to undergo for complete metabolism ifit happens in the peroxisome and the mitochondria respectively?
If arachidonic acid enters into the beta-oxidation of fatty acids, how many cycles it has to undergo for complete metabolism if it happens in the peroxisome and the mitochondria respectively?...
5 answers
0-u f(xt) in (0,1)x(0T) 8x"u(0,t) = go(t),k (1,t) = &,(),0<t<T,u(x,0) = Uo(x),0 <x<1has a solution, this solution is unique. In (1): k > 0, T> 0,and the functions f, gu, and u are given
0-u f(xt) in (0,1)x(0T) 8x" u(0,t) = go(t),k (1,t) = &,(),0<t<T, u(x,0) = Uo(x),0 <x<1 has a solution, this solution is unique. In (1): k > 0, T> 0,and the functions f, gu, and u are given...
5 answers
In a sample of 81 individuals, the calcium concentration incerebrospinal fluid, "Y", and the calcium concentration in blood,"X", were measured. Adjusting the Line of Least Squares weobtain:b = 2, a = 1, Sy.x = 10, Sb = 0.20, d2 = 7 900, r = 0.80, r2 =0.64What value of Y do we estimate in an individual with X =30?Select one:a. 61.b. 60.c. 30.d. None of the above.
In a sample of 81 individuals, the calcium concentration in cerebrospinal fluid, "Y", and the calcium concentration in blood, "X", were measured. Adjusting the Line of Least Squares we obtain: b = 2, a = 1, Sy.x = 10, Sb = 0.20, d2 = 7 900, r = 0.80, r2 = 0.64 What value of Y do ...
5 answers
Q6. [15 pts] Frove by mathematical induction that for nll integers(3n - 21REQUIREMENT- show the base caSe_ inductjon hypothesis. nhd induction step precisely. scribve clearly what is the induction hypothesis and where dc You te inducLiou hypothesis, Full explanation is requirerl for this question;
Q6. [15 pts] Frove by mathematical induction that for nll integers (3n - 21 REQUIREMENT- show the base caSe_ inductjon hypothesis. nhd induction step precisely. scribve clearly what is the induction hypothesis and where dc You te inducLiou hypothesis, Full explanation is requirerl for this question;...

-- 0.019631--