5

Fhat is the pH in the aqueous layer of the test tube during an RVA extraction? What would you find in the aqueous laver if vou performed the extraction at a neutral...

Question

Fhat is the pH in the aqueous layer of the test tube during an RVA extraction? What would you find in the aqueous laver if vou performed the extraction at a neutral pH instead?

Fhat is the pH in the aqueous layer of the test tube during an RVA extraction? What would you find in the aqueous laver if vou performed the extraction at a neutral pH instead?



Answers

What is the $\mathrm{pH}$ of an aqueous solution that is $0.089 \mathrm{M}$ NaOCl?

So we have, uh, 0.0 89 Moeller. Uh, sodium Hypochlorite sodium is a spectator in acid base reactions. It's not acid based active, but the hypo chloride ion is thes the conjugal base of the weak acid hypo Cloris acid. And so it will react as the base. And so I've written the KB reaction, the reaction of hyper gloried ion with water thehyperfix Orion will gain H plus. The water will lose it and make O H minus and from the reaction than the KB expression. Now you go to the table and you find a K A for, uh, hyper Cloris acid, but you don't find a K B. What you have to do is calculate the K B from the K W, and that is based on the relationship that four any weak acid and it's congregate base or a weak base and its consequent acid, the product of the two equilibrium constants will BKW only for a pair of Kontic. It's and so the value from the table is 2.9 times 10 to the minus eight for hyper Cloris acid. And so now this is like any other problem. Once we recognize those things that sodium is a spectator. So leave it out. All negative ions are basis, and all of those negative ions will react except the conjugal basis of strong assets. So standardized table ah, And now plugging those values into DKB expression X and X in the numerator and 0.0 89 minus sex in the denominator, and the K B is equal to three point four. I'm sending the minus seven, and that's a small K. And for that reason we're going to be able to drop to sex. And so X squared is equal to multiplying both sides. By this denominator, X squared is equal to 3.4 times 10 to the minus seven times 0.0 89 and X will be the square root of that. And so without rounding, I have just que From doing this calculation, I'm just gonna multiply by 0.0 a nine and then take the square root and I get 1.75 times 10 to the minus four, and that is Theo H minus concentration. And so the, uh, p o h we can get from the log of that. And so the p O. H is 3.76 and the pH and the P O. H have to some to 14 and so the Ph is 10.24.

Can question 54. We are asked what is the concentration of hydroxide in a .18, Mueller Aquarius solution of hydroxide? I mean it then wants to know what the phs well, they didn't give us a KB value. Hydroxy element as a base. So we need to look at the KB value. KB value from the back of the book is 1.1 times 10 to the -8. This is equal to the hydroxide concentration square divided by the initial based concentration minus the hydroxide concentration. If we assume that this hydroxide concentration is small with respect to the base concentration, small meaning less than 5%,, then this equation simplifies to where the hydroxide concentration is simply KB multiplied by the initial based concentration. And we have these two values Giving us a hydroxide concentration of 4.4 times 10 to the -5 moller. To get ph we need to take the negative log of the hydro knee um concentration. The hydro knee um concentration is going to be the hydroxide concentration divided into K W 1.8 times 10 the negative 14. So this ratio is the hydro knee um concentration. We take the negative log of that and we get a ph of 9.65

Free of the concentration of the weak acid. And it's conjugal base in a buffer solution. And we know that PK of the weak acid and we consult for Ph using Henderson Hasselbach equation pH is going to be equal to P K, which is given to us plus the log. I always remember it's the base, so we need to identify the base, and the base has a concentration in this problem of point to all the acid is 0.0.15 so we get a pH of 3.49

To calculate the pH of this buffer solution. We simply need to know what the PK is and that was given to us at 4.75 And then we need to identify the concentration of the base, which in this case is ch three C to minus. And the acid, which is see, it's three CEO age. So pH is going to be equal to PKK, which is given to us for a CD Kassid, plus the log of the acid ate concentration, which is 0.4 divided by the gases concentration, which is 0.8 and pH is 4.45


Similar Solved Questions

5 answers
Assign the oxidation numbers to all atoms 5
Assign the oxidation numbers to all atoms 5...
5 answers
What is the implied domain of this linear function? What was the luxury tax for the New York Yankees whose 2012 payroll was $222.5 million? Graph the linear function. What is the payroll of a team that pays a luxury tax of 827.2 million? (e) Interpret the slope.
What is the implied domain of this linear function? What was the luxury tax for the New York Yankees whose 2012 payroll was $222.5 million? Graph the linear function. What is the payroll of a team that pays a luxury tax of 827.2 million? (e) Interpret the slope....
5 answers
Given the surfacef(z,y) = 23+422 +32y+y2,(a) Enter the partial derivative f (1,2) ,Enter the partial derivative fy (1,2),Enter the coordinates of the point on the surface where I = and y = 2 in the fomat (x,y,z) ,Hence enter the equation of the plane that is tangent to enter 2*xtytz-=f(z,y) at that point For example , your equation of the plane is 21 +y+2-5 = 0
Given the surface f(z,y) = 23+422 +32y+y2, (a) Enter the partial derivative f (1,2) , Enter the partial derivative fy (1,2), Enter the coordinates of the point on the surface where I = and y = 2 in the fomat (x,y,z) , Hence enter the equation of the plane that is tangent to enter 2*xtytz-= f(z,y) at...
5 answers
Question 24, chap 101, sect 16. part 1 of 2 10 points A structural I beam is made of iron_ A view ofits cross-section and its dimensions is shown in the figure; where d = 3 cm, W 5 26 cm h = 26 cm and the length (not shown) of the beam is € = 1.27 m
Question 24, chap 101, sect 16. part 1 of 2 10 points A structural I beam is made of iron_ A view ofits cross-section and its dimensions is shown in the figure; where d = 3 cm, W 5 26 cm h = 26 cm and the length (not shown) of the beam is € = 1.27 m...
5 answers
ConstantsThe value of specific heat for copper is 390 J /kg for aluminun is 900 J/kg for water is 4186 J /kg . CandPart AWhat will be the equilibrium temperature when 265 g block of copper at 255 C is placed in 145 aluminum calorimeter cup containing 875 g of water at 15.0 C? Express your answer using three significant flgures_AZdT = |20SubmltPrevlous_Answcrs Request AnsWcrIncorrect; Try Again; 13 attempts remaining
Constants The value of specific heat for copper is 390 J /kg for aluminun is 900 J/kg for water is 4186 J /kg . C and Part A What will be the equilibrium temperature when 265 g block of copper at 255 C is placed in 145 aluminum calorimeter cup containing 875 g of water at 15.0 C? Express your answer...
5 answers
The absolute maximum value of flx,M)=x-xy+y-1 on the domain *24%Jout 0f10question
The absolute maximum value of flx,M)=x-xy+y-1 on the domain *24% Jout 0f 10 question...
5 answers
Convert the rectangular equation to a polar equation.$x=4$
Convert the rectangular equation to a polar equation. $x=4$...
5 answers
Fanan Tn pAeeeEruHeeeena anSChEineeninEnetn KolaHemont nnnnne Mn mumlouneRumubcr uo eleuttuim#akch of the 'peticoJcputleshposithcly churued?
Fanan Tn pAeeeEru Heeeena anSChEineenin Enetn Kola Hemont nnnnne Mn mumloune Rumubcr uo eleuttuim #akch of the 'petico Jcputlesh posithcly churued?...
5 answers
Rewrite the following without sumnmation sign for essary that YOu understand or expand the notation (r+u)" '=E o(#) I"-ky"It is notnec-at this point.
Rewrite the following without sumnmation sign for essary that YOu understand or expand the notation (r+u)" '=E o(#) I"-ky" It is notnec- at this point....
5 answers
Score: 0 of pt8.4.7Evaluate the following integral using trigonometric substitution. { dx T9 { dx T9-x2 (Use € as the arbitrary constant as needed. Type an exact answer:)
Score: 0 of pt 8.4.7 Evaluate the following integral using trigonometric substitution. { dx T9 { dx T9-x2 (Use € as the arbitrary constant as needed. Type an exact answer:)...
5 answers
E)Solve the following system of linear congruences by Chinese remainder theorem.(four linear congruential equations)x ≡ 2 (mod 3)x ≡ 3 (mod 5)x ≡ 4 (mod 7)x ≡ 99 (mod 11).
e) Solve the following system of linear congruences by Chinese remainder theorem.(four linear congruential equations) x ≡ 2 (mod 3) x ≡ 3 (mod 5) x ≡ 4 (mod 7) x ≡ 99 (mod 11)....
5 answers
ALntNeCMNaBh1} NaBHaAcOh2) Hyot2)H;o'NaCNNaCNAcOHAcOHland IlIIll and VIV onlyOI,IV and VIl and IV
aLnt NeCM NaBh 1} NaBHa AcOh 2) Hyot 2)H;o' NaCN NaCN AcOH AcOH land IlI Ill and V IV only OI,IV and V Il and IV...
5 answers
The rate of a continuous money flow starts at 5700 and increases exponentially at 6% per year for 10 years, Find the present value and final amount [ interest earned is 8% compounded continuously:
The rate of a continuous money flow starts at 5700 and increases exponentially at 6% per year for 10 years, Find the present value and final amount [ interest earned is 8% compounded continuously:...
5 answers
Applyng Mhecont21s 2nD#DZeetttoltt En Di me #aauredmeeD Pean trua tero PLe pe eaaaaNnd Euaeieiaerenlue tuma DikoderkEaaRE 1on9 4lig I4m IW I* 704 W297 DDa Waa Ik him alm Io #ld 16 >ib rlw &4 20 iulip /m Yi Jnb *Dtmrani D04It SEdeeEEaEa Jiimma Can alttkumwgko 0 opmittsamauhmti 1 CortoaerR7 ustmiphthupaeet arki @m uteruE L Aumduhdly eoikle Ionitp ieaawutie Jeelve Oirdem Exbe Tae eal FEn
applyng Mhecont21s 2nD#DZeetttoltt En Di me #aauredmeeD Pean trua tero PLe pe eaaaaNnd Euaeieiaerenlue tuma DikoderkEaaRE 1on9 4lig I4m IW I* 704 W297 DDa Waa Ik him alm Io #ld 16 >ib rlw &4 20 iulip /m Yi Jnb *Dtmrani D04It SEdeeEEaEa Jiimma Can alttkumwgko 0 opmittsamauhmti 1 CortoaerR7 ust...
4 answers
Note: You must; show all your work to get full credit or partial credit-Ws = {[a &]- 0,6,C,d are integerssubset of M2x2Wsthe set of all functions such that f (0)subset of C(-o,0)_(2Opt) Determine whether the given set is linearly independent o linearly dependent. S1 = {(1,2,-1), (0,0,2)}, subset of R?
Note: You must; show all your work to get full credit or partial credit- Ws = {[a &]- 0,6,C,d are integers subset of M2x2 Ws the set of all functions such that f (0) subset of C(-o,0)_ (2Opt) Determine whether the given set is linearly independent o linearly dependent. S1 = {(1,2,-1), (0,0,2)}, ...
5 answers
A IQ0-g bullet is fircd hotizontally into a 14.9-kg block of wood resting on & horizontal frictionlcss surfacc ande the bullet becomes embedded in the block. the murzle speed ol the bullet is 2S0 . ns_ what is the spced of the bloxek immediately afler the impact? what is thc average force acting on the block during that & SO ms collision
A IQ0-g bullet is fircd hotizontally into a 14.9-kg block of wood resting on & horizontal frictionlcss surfacc ande the bullet becomes embedded in the block. the murzle speed ol the bullet is 2S0 . ns_ what is the spced of the bloxek immediately afler the impact? what is thc average force acting...

-- 0.018749--