titration acid with 18ml from mixture (NaOH and Na2CO3) when added ph.ph as indicator Consumed volume from 0.5N HCI is 15.1 ml while when added M.O as indicator the Consumed volume 8.9 ml. what is the concentration for each component in ppm.
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- 6:07 LTE 74 Ch 17 Buffers and solubility 1. Buffers: C... 2. Buffers: C... M 3. Buffer P... 1req 4. Titration C... M 1req 5. Titration... Preparation Question [Review Topics] The following graph shows the pH curve for the titration of 25 mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a monoprotic base. Question Question 6. Writing Ksp... 7. Ksp: Calcul... 6 M 4 8 2 0 M M 8. Common I... 5 10 15 20 25 30 35 40 45 50 mL of 0.1 M base added 9. Precipit... 1req (1) The pH curve M 10. Buffer + represents the titration of a with a ✰ acid Progress: 7/10 groups Due Apr 12 at 10:00 PM base. (2) Choose a Previous Next Finish Assignment Email Instructor Save and Exit Αν 03-cnow-owl.cengagenow.com ?3. Complete neutralization of 10 ml of phosphoric acid solution by NaOH 0.I N in the presence of phenol phthalein until the appearance of purple color (pH, = 9) 11 ml. of NaOH is consumed. (a) What is the concentration of phosphoric acid? (b) Calculate the indicator error. pk2.1 pK. - 7.2 pK - 124- 4 Hom: X 00 4.6 Applied Opt x 0o DESU Calculus X https://app.101edu.co Aktiv Chemistry X + G Consider the re: X G Consider the re: X Consider the reaction of 60.5 mL of 0.310 M NaC7HsO2 with 50.0 mL of 0.245 M HBr. (Ka of HC7HsO2 = 6.3 x 10-5) Question 9.g of 21 With 0.0065 moles of C7HsO2 and 0.0123 moles of HC7H5O₂ in the beaker, what would be the pH of this solution after the reaction goes to completion? Q Search 21 a (368) Optimizati X A to 4 www.desu.edu X G - 1 7 Su Delaware State x+ 4 5 +/- 2 3 8 6 9 0 Submit X C 4x x 100 O 0 8:31 PM 3/26/2023
- UEid- base tit ration the Consentrat ion of ammonia Solution excess HCL was titrated ith o.07om Na, cO3 Solutian. The volume of Na, Coz Solution reguired was 15.50 ml using the following eguations: 2HCLem> + Na, COgcaps CO2 Cays + HzO1) t NaCL Calculate the concentration (molarity and ppm) of ammonia in the Original Solution.(MM of NHzis 17.031.9/4) 10.0 was by of o.10OMI HCE to ThenConsider the following infermation about sulfurous acid, a diprotic acid (11,S0,L LSO3=HSO, +1I* pK=1.81 HSO, S0,+H pK2-691 The titration curve for sodism sulfite, Na SO, with standard HCl is shown below PH VI V2 ml, HO added What are the major species present al point 3? O No12. Collect a sample of lake water; a) 100 mL titrate with 0.05N HCI to HCO3 eq.pt. and we need to add 0.5 mL of acid solution. What is the CO3 ALK as M and mg CaCO3/L? b) 100 mL titrate with 0.03N NaOH to CO; eq.pt. and we need to add 0.6 mL of base solution. What is the OH ALK as M and mg CaCO3/L? c) What is the Cr and pH value?
- 6) Bu analyst in a solution uning two dierent indicators. lis results were an /lowes : meanired the con cen tration n aid Mean [HCI]+ Stand Dev. 002467テ 0.0045 Indi cator A: 18 12 Indicator B: 0-02407 チ0.0032 Is the difference between te tueo indican Ys figniticand at he 95%. confiden ce loue/?3. Cal culate Nattz POy:(Ka, kaz and tas of HsPO4 6.32x10-8 and 4.5x10-13 he ott of a o.0400M Shutin of ane 7.11 メL65 respectively). 4. Con Sider the titration of 1w.00ml of a 0.200M Solution of he hypothetical acid tzA uith o.loc Soclium hydroxide. Enourhg hat Kay = (. 00 k1o-8, and kag = 1.00 xLo 12 Calculate ka after he addition of a) 1o. oml Na OH =l:00x16", E1:00x104 9 20.oml Na OH ) 30. omL Na ott d) 40.0ml Na OH*which of the following are correct of the Procedural Steps: toit □ The PH meter be calibrated before use. 109, 9/ Used solutions, □ A 25.0 ml Sample of vinegar is diluted to 250ml □ Solutions of Known PH; called buffer are to calibrate the pH meter. □PH and volume measurements are collected approximately every 0.2 change in PH. of (spropst pak Ord noi tulo? Not od to smolou thy09 344 7) NO 1917, no 11 SHE 20 ENOT STEF bit OUSIN p 401 gonsloviope pr 5 10 triot Song Lovrops holo) 69 sub of bonp⁹7 2999912 70 70/4 TO
- EXモRCISE8 4/3/21 at 25°6 , was adde d dropwis e into a In titration experiment a O . 15 M NaoH conical flask containing 12.50 m L of a few drops of PH indicator. O.10 M Htel and indicator for the (a) Give one titration . suitable calculate the pH of the solutias after adding so.0omL of NaoH -Part C. Determination of Unknown Balanced chemical equation: Hcl+ Na OH -o Nacl t Hg0 Unknown number NA Trial 1 Trial 2 Trial 3 Volume of unknown HCl titrated 10.00mL NA NA Initial burette reading 0.90mL Final burette reading 30.90mL Volume NaOH added 20 00ML 50.00MLXO.144 m=43.2m moles NaOH added 4.335m (Use average molarity from part B and multiply it by the volume you added) 0.4335 M moles HCl 4.335m 04335m 10.00 mL molarity of HCl Actual Molarity (from instructor) 0.3150M percentage errorcalculate the pH of the equivalence point N2OH soluhon Concentrahun.of n =0.lmol/L Mean titre (MOOH solution)= 18,95 mL Amount of NanH = 0.00199 moles Molar raho of Naot: aspirin=1:1 inn31:1 Aspirin= 0.0o189 moles Lintitration) Amount of 0.00189 Moles Mass of aspirin = 0,341 4 Mass /9 of Aspinin (per tablet) =0,34