In the analysis of soda ash experiment, what will be the expected relationship between Vphth and Vmo if the sample consists of 0.0450 moles NaOH and 0.0125 moles NaHCO3. A. Vmo = Vphth B. Vmo > Vphth C. Vmo = 0, Vphth > 0 D. Vmo < Vphth E. Vmo > 0, Vphth = 0
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In the analysis of soda ash experiment, what will be the expected relationship between Vphth and Vmo if the sample consists of 0.0450 moles NaOH and 0.0125 moles NaHCO3.
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- Calc. the alkaline strength of a sample of impure K2CO3 in terms of percent K2O from the ff. data: wt. of sample = 1.000g; HCL used = 55.90 ml;NaOH used = 0.42ml; 1.000mlNaOH 0.008473 g KHC2O4 .H2C2O4 . 2H2O; 1.000ml HCL 2.500 ml NaOH.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 Thenb. TBSO 1.excess NaOH excess Br₂ 2. H3O+, dilute, cold 3. SOCI₂, py 4. 2 eq. H₂N- -OMe
- Calculate the percentage CH3COOH in a sample of vinegar from the following data.Sample = 15.00 g, NaOH used = 43.00 ml ; 0.600 N H2SO4 used for back titration =0.250 ml ; 1.00ml NaOH is equivalent to 0.0315 g H2C2O4. 2H2O.A solution of HCl was titrated against sodium carbonate. What is the titer for Trial 1 in the given data? T2 0.3562 0.3479 0.3042 Weight (g) Initial V (ml) 0.80 1.60 35.20 36.70 39.80 Final V (ml) Vol HCI used (ml) 35.10 N of HC (eq/L) 0.1954 0.1870 Average N of HCl (eq/L) A- 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
- The hydronium ion concentration of an aqueous solution of 0.532 M benzoic acid, C,H5COOH (K, = 6.30×10) is M. Submit Answer Retry Entire Group 9 more group attempts remaining Previous 99+ fg fio h2 prt sc delete hom & * 6 8. backspace %23o/index.html?deploymentld%=55750828934189288909969212&eiSBN=9781305657571&snapshotld%32199898&id%3... ☆ IDTAP Q Search this cou Use the References to access important values if needed for this question. The concentration of H3ASO3 in a solution is determined by titration with a 0.1945 M Ce+ solution. The balanced net ionic equation for the reaction is: 2Ce*(aq) + H3ASO3(aq) + 5H2O(1) 2Ce*(aq) + H3ASO4(aq) + 2H3O*(aq) (a) If 19.83 mL of the 0.1945 M Ce** solution are needed to react completely with 30.00 mL of the H3ASO3 solution, what is the concentration of the H3ASO3 solution? M (b) Which of the two solutions was in the buret during the titration? (c) Suppose at the end of the titration, the solution containing the Ce³* ion is transferred to a volumetric flask and diluted to 300. mL. What is the concentration of Ce3+In the diluted solution? Submit Answer 5 question attempts remaining3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww ww
- 5. From the stock solutions of 1.00-mol L acetic acid and 1.00-mol L of sodium acetate, six solutions were prepared with the acetic acid and acetate concentrations shown in the table below. The pk of acetic acid is 4.756. [Acetic acid). [Acetate). Final volume, Solutio mol L mol L ml A. 0.10 100 0.0000351 100 0.10 0.10 100 0.010 0.010 100 0.10 0.15 100 0.15 0.10 100 -1 Determine the volume of the stock solutions of 1.00-mol Lacetic acid and 1.00-mol L of sodium acetate needed to prepare the solutions. Write your answer in the table below. a. Vol. acetic acid, ml Vol. of acetate, ml Solution A b. Calculate for the initial pH of the solutions and write the pH in the table below. Solution Initial pH A Which solution(s) have the same pH? C."uonsanh stm The hydroxide ion concentration of an aqueous solution of 0.532 M acetylsalicylic acid (aspirin), HC9H¬O4, is [OH]= M. Submit Answer Retry Entire Group 9 more group attempts remaining Next 10/2 prt sc delete home fg ho 144 num & backspace %3D lock Y hc 3: 00 近Help )) 32% Mon 1:12 AM dix-d.pdf AC=8935a868521ec4cdala6e89069b89458#10001 6 o I Review I Constants I Periodic Table Calculate the concentration of CIO, at equilibrium if the initial concentration of HCIO2 is 2.17x10-2 M. Express the molarity to three significant digits. 响 AX中 [CIO2 | = M Submit Request Answer Part C Calculate tm concentration of HC1O2 at equilibrium if the initial concentration of HC1O2 is 2.17x10-2 M . Express the molarity to three significant digits. ? [HCIO2] = P Pearson Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy Permissions | Contact Us | 895 102 W tv MacBook Air 圓 國