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Q2 Exactly 28.3 mL ofHCI 0 is required to neutralize the molarity of the HCI solution? 0.250 g NazCO; What is 2 HCI (aa)| INazCO: () 2NaCltoq HzO 0 + COze 0.083 ...

Question

Q2 Exactly 28.3 mL ofHCI 0 is required to neutralize the molarity of the HCI solution? 0.250 g NazCO; What is 2 HCI (aa)| INazCO: () 2NaCltoq HzO 0 + COze 0.083 M 6) 0.24 M 10.167 M d)"0.56 M Ie) 2.0 M

Q2 Exactly 28.3 mL ofHCI 0 is required to neutralize the molarity of the HCI solution? 0.250 g NazCO; What is 2 HCI (aa)| INazCO: () 2NaCltoq HzO 0 + COze 0.083 M 6) 0.24 M 10.167 M d)"0.56 M Ie) 2.0 M



Answers

If 38.55 mL of $\mathrm{HCl}$ is required to titrate $2.150 \mathrm{g}$ of $\mathrm{Na}_{2} \mathrm{CO}_{3}$ according to the following equation, what is the molarity of the HCl solution? $$\mathrm{Na}_{2} \mathrm{CO}_{3}(\mathrm{aq})+2 \mathrm{HCl}(\mathrm{aq}) \longrightarrow 2 \mathrm{NaCl}(\mathrm{aq})+\mathrm{CO}_{2}(\mathrm{g})+\mathrm{H}_{2} \mathrm{O}(\ell)$$

Okay, so in the first part of this problem, we are as find out How many me Later self. This much Moeller is seal are needed to completely neutralized fifty mil on this much Mueller barium hydroxide solution. So to find that but will do first is will find a number ofthe malls for these Follow him and this malarial barium hydroxide From there using the balanced equation forthis reaction, we will find out how many moles off eight c l which we will We need to neutralize that much moola, barium hydroxide and from there using the more clarity and and the calculated number of malls will be able to find out how many milliliters off a cell are needed to completely neutralize thiss. So first, we'Ll find the number of multiple barium hydroxide So member of mall so barium hydroxide will be equal to it's morality Time's volume in later. So the modernity here is zero one one one Mueller are more per liter times the volume in later we have fifty millimeter so well, right, fifty times gender. The bar minus three later And from here we will get a value off. Zero bond is he was five more. So this is the number of more for the barium Hydro st. Now we will write down the balanced equation for this creation. So the balanced equation we're writing in the ministry question directly, it should be to its hell, no. Well, great. Great one. Very, um hydroxide, Yeah, to give us very, um, Claridge and to h to own. So from the balance to question, we can see that one more Bayon hydroxide will react with two more off a seal. So you all right? One more barium hydroxide will be neutralized by all by Unical toe tumult. It's seal. That means, um, Mr Point, Syria zero five mall. Very, um hydro side will be neutralized by two times zero point zero zero five more. Its seal, which is equal to zero point his serial. One more sl. So this is the number of malls for a seal which will be needed. So from here, we're going to find and followem off. It's elegant. Using them is in the minority. So the volume off its seal needed number of malls off. It's hell over, Um, a small charity. So you know that way. Just calculated the number of malls at zero point serial one mall and the morality is given as point one two zero Mueller So we'LL write it as point one two zero more bar later and this will give us a value off zero point zero eight three later And we need to find out that same Millie later Sail Convert this two million later One liter is one thousand million Later on DH From here we'LL get eighty three point tree militar So this is the volume of a seal in militar which will be needed to completely neutralize this much Mariam hundred side Now we'LL goto our next problem in this problem where has to find out how many milliliters off point one toe find molars Sulfuric acid are needed to neutralize thiss mass of sodium hydroxide again what we will do we will find a number of malls off. Sorry, um, hydroxide four point two grams sodium hydroxide and from the balanced regression we'LL find how many moles off extras afore we will need to completely neutralize this much more low sodium hydroxide and from the number of moola sulphuric acid. Using this minority, we can find out the volume in millilitres first offer, you guess it. So first, you find the number ofthe malls off sodium hydroxide, which is mass over molar Mass. So the mass Siri's point two zero zero grams and the molar mass of sodium hydroxide is forty point one. Grandpa are more, and it will give us a fellow of five time's gender. The bar minus three more. So this is the number of Mall of sodium hydroxide now. Well, right, the balanced equation for this reaction. So the balance to question will be each to us of four, and AC Woz will react to it to sodium hydroxide to give us sodium self that and to each tool. So now from here, we can see that, too. Mono sodium hydroxide will be neutralized by one mole of histories of four. So to Mel's, sodium hydroxide will be neutralized by our equal toe. One mullets just off for that men's this much Matloff sodium hydroxide will be neutralized by one over two times five times ten to the bar minus three more, and this delivers a blow off two point five times ten to the minus three more So this is the number of mole off sulphuric acid too. We shall we needed So now from this fellow and using the morality, we can find out the volume of sulphuric acid needed. So PhDs of four will be number of malls office just for over the morality of histories of four and the number of mosey of just calculated as two point five times to the four minus three more. Yeah, and ah, morality is Zira Point Oneto fight more per liter, so it it will give us a valve off zero point zero two later. So we have to find out the value in militar children and then one thousand million later as one liter universe of L A off twenty militar. So this is the volume of sulphuric acid in millilitres which will be needed to neutralize the sodium hydroxide. God, Yes. So the sodium hydroxide. Now, in the hard part of this question, we have to find out if this much military buryem chloride is needed to precipitate all the sulfur down in seven fifty two milligram off. Sorry. Um self it What is the morality of the barium? Correct. So again, first we'Ll find out the number of malls for seven. Fifty to Graham sodium sulfite. From there we'Ll find the number of most of the inquiry And then, using the balanced equation, we'LL find out the majority of the very great. So first, we'll find a number of mall of an address of floor, which would be, ah, the massive arm alarm us So seven. Fifty two million Grammys zero point seven five to Graham over the molar mass of Saudi himself, which is one forty two Grandpa Ramon. And this will give us the value ofthe five point three time. Still department is three mall. Now we have found a number of Moloch sort himself out. Now we'LL write the balance the question So the balanced equation for discretion is I am Claridge reacting with sodium self it giving us very himself at and doing a seal. No. From here you can see one bowl of Saudi himself. We've been neutralized by one more herb am chloride. That means this much more love Saudi himself. It will be neutralized by the same number off um, the seal to herbarium correct. So we can write down the number of full of barium crate as this So NBS sailed to or the number of months of years lt weighs five point three times Get over minus three more now From here we can find out Um I know the minority from Bankrate which will be number of most of our volume Number of Moses This one over the volume is fifty five point a militar We'LL write it as litter this multiplying waiting or minus three And this will give us a bell off zero point zero nine five Mueller I said this is there, um morality off man creates solution now in last problem we have to find out if forty one seven millimeter off this much Mona is seal is needed to neutralize solution off calcium hydroxide How many grounds The calcium hydroxide has been the solution So again what we will do first you will find out the number of malls off itself from its volume and morality From there is in the balance situation we'LL find out the number of all of calcium hydroxide Ah she'll be needed And then from that number of malls using the molar mass we confined how many grams of calcium hydroxide needed So first we'll find out the number of mall off eight seal which will be in the morning eighty times for Liam on the morning of the hair is zero point two eight more per later times The follow me in later forty two point seven times Junior government is three later and this will give us a hello off the point zero zero nine more So this is the number of more of calcium hydroxide Now what we'LL do is we'LL find out the balanced equation From there we'LL find out the number ofthe most ofthe eight c require So the balanced equation is two It's c l will react with one calcium hydroxide to give us one girl sham chloride and two is tool Now from here we can see one more of calcium hydroxide will be neutralised by two more off a C l one more calcium hydroxide sign will be neutralized My are identical to Touma Let's seal that wins our s o We have find out the number of one ofthe It's hell. So what we'LL do is well, write it down the other way to Molly's cell Well needed will be needed Require will need it too Neutralised One mole of culture My drug side. That means zero point zero zero nine more C l will be required to neutralize halftimes sirah planned zero zero nine mall and she'LL be equal to zero point zero zero four more. So this is the number of molds off calcium hydroxide, which will be neutralized. Now, from here, we're going to find a massive catching my drug sign. Samantha ve calcium hydroxide will be, ah, the number of malls. Times the molecular weight to the number of mole is zero point zero zero for more times. The Mueller math. A molecular weight off. Get your mind off sandwiches. Zero point two nine six. Um, grandpa or more. And this will give us a bell off zero point two nine six gram. So this is the mass of calcium hydroxide, um, which must be in the solution.

So here we are given information with specific data And in this case were basically given information that requires 0.0140 moller barium hydroxide which has two moles of hydroxide. So as a double contribution And uh it took 22.6 ml to neutralize 25.0 ml of hcl. So the equivalence point occurs where the number of moles of bass added is equivalent to the number of moles of acid added. So that occurs when we have also, we can write this alternatively as uh polarity times volume equals polarity of the other component times volume. Since polarity times volume is equivalent to the number of moles added. And also we have to adjust essentially for the number of moles of H plus and the number of moles of hydroxide. And we do these but do this by introducing uh certain row factors. So in this case are basis contributing to Mosul hydroxide. So we have to include the two. And we already have information for the polarity of the base and the volume of the base for HcL. We know that it's the only contributes essentially one proton. So we here we already have all the information necessary to solve this. Mhm. And by plugging everything in, we can see that the concentration, the polarity of hcl required is equivalent to 0.025 Mueller's. And this is our final answer.

Who wants to know the polarity of Hcl and the hcl reacts to form carbon dioxide. So what we need to do is we need to use the giving conditions to find the moles of carbon dioxide first. So convert the volume two leaders by the body by 1000 at 273. The temperature in degrees Celsius to get a temperature and Calvin divide The pressure in mm mercury by 760 to get the pressure and atmospheres and we're going to plug in the values into p vehicles and R. T. It's all for end. So when we saw for and we get the moles of carbon dioxide, then we need to convert moles of carbon dioxide two moles of Hcl. Using the mole ratio from bouncing correction that we have a two in front of the HDL one and nothing in front of CO two with just one or two walls. So then we can use this to convert from moles of carbon dioxide to multi hcl and then divide by the volume of the 100 podcasting that is given in leaders and were able to get moles over the years of hydrochloric acid and we can get there for we get the more clarity

No portion is calculated the modernity of hydrochloric acid to neutralize sodium auxiliary. So what is given in the questions we will use in this question? More racial concept. Okay so first beagle right there. What is given in the question? So we have volume of at CNN that is the cartoon 40.95 ml If we can work it into Later then we will develop 1000 that will comes out. 0.04 095 later. Okay. Moss of sodium Hogzilla toe. Mhm. Is given. That is 0.55. Get out and muller Moss of sodium Absoluto is required to 1 34. Get down. But motive. Okay so to calculate the number of moles of sodium Hogzilla toe, we will use this formula Moss. Bye Mueller Moss. So moss is given zero 55 divided by 1 34. That will it will do 4.1 to 10 to the power -3. Mhm motor. Okay so what is given reaction in the question reaction that is too at C. L. Plus I need to see to go. Food that gives adds to see to go for bless. Do any fear. Okay so here we can conclude that two more of SCL required for a neutralization of sodium oxalate. Oh yeah that's why we can write this more of that cl divide by two. More of any to still to offer. Okay what is the formula of mole and moderating? We know that mall equal to moderate in the volume in later and it may also require to maths. Bye. Mother months. Right so we will use the formula that is required. Okay so more of Excel will equal do modernity into volume modernity into Volumes divided by two for Excel. And we have mole of sodium oxalate toe. That is equal to 4.1 into 10. to the Power- Street. What is the volume of Excel Rolling of ACL. is equal to 0.0 4095, divided by two. It will do 4.1 into 10 days to the power -3. So modernity will comes out right 1 97.8- 10. They should've or -3. Or it will also equal to 0.2 Mueller at sea. Okay.


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