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- E. Analysis of a mixture consisting of NaOH + NażCO3 + inert matter gives the following data: Sample portions are titrated. With one portion, an end point with phenolphthalein is obtained in cold solution, with 44.52 mL of 0.5000 N HCI. The other portion requires 46.53 mL of the acid for an end point with methyl orange. Calculate the percentage composition of the original sample. 10.00 g. Its aqueous solution is diluted to 250.0 mL and two separate 25.00 mLo/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 remainingContent OWLV2 | Online teaching and lee X G How many mlof 0.552 M HI are x A cvg.cengagenow.com/ilrn/takeAssignment/takeCXPCompliantActivity.do?locator-assignment-take CHAPTER 4 - STOICHIOMETRY: QUANTITATIVE INFORMATION ABOUT CHEMICAL REACTIONS Page 1 of 3 Next O A saturated solution of zinc hydroxide, Zn(OH)2. has a pH of 8.7. What is the hydronium ion concentration of the solution? Is the solution acidic or basic? Concentration = M The solution is Cengage Learning Cengage Technical Support
- The reaction of sulfuric acid with sodium hydroxide is described by the equation:[% H_2SO_4+2NaOH\ →\ Na_2SO_4+2H_2O %] Suppose 50 mL of [% NaOH %] with an unknown concentration is placed in a flask, then a few drops of bromthymol blue were added. A solution of 0.20 M [% H_2SO_4 %] is dripped into the [% NaOH %] solution. After exactly 25.0 mL of [% H_2SO_4 %] is added, the color changes from blue to yellow. The Titrant in this experiment is_________e 6.30 L of 0.262 M NaOH from the concentrated commercial reagent [50% NaOH (w/w), sp gr 1.525]. Take mL of the concentrated reagent and dilute to 6.3 L with water. f 3.90 L of a solution that is 16.0 ppm in K*, starting with solid KĄ Fe (CN),. Dissolve mg K4 Fe (CN)6 in enough water to give a final volume 9, of 3.9 L.A 0.1036-g sample containing only BaCl2 and NaCl is dissolved in 50 mL of distilled water. Titrating with 0.07916 M AgNO3 requires 19.46 mL to reach the Fajans endpoint. Report the % (w/w) BaCl2 in the sample. [Ans. 29.86 % (w /w)]
- A 0.3172 g sample containing only KCl (MM: 74.55)and NaBr (MM: 102.89) is dissolved in 50 mL water and titrated with 0.1120 M AgNO3, requiring 36.14 mL to reach the endpoint. What is the % NaBr in the sample?Note: Send to me your solution for perfect points with proper name and label. a. 17.40% b. None of the given choices c. 78.39% d. 15.22% e. 82.41%simple steps Find the % of sodium carbonate in a sample if 5.002 g of the sample required 29.10 cm³ of 0.7344 mol dm-³ HCl for complete neutralisation. Make sure to solve the problem using the balanced equation. Solution (a) Determine moles of HC1 (titrant, known) (b) Use a balanced equation relate moles of analyte to moles of titrant (reaction ratio) (c) Determine mass of analyte (determine unknown) and % in sampleQ2:- :- Describe how you would prepare 1/2 Liters of 2.50 N and2.50 M H „PO, water solution. if you know the sp.g 1.18 , 97% Q3:_ A-what are the different between Eq and Ep ? B- Why Titrimetric methods are widely used for routine determination? Na=23, Cl=35.5 , H=1, 0=16 ,P=30 , N=14,S=32 , Bi=
- 1. Molarity of the NaOH solution 0.238 mol/L Trial 1 Trial 2 Trial 2. Volume of H;PO4 added to flask 22.0 mL 22.0 mL 22.0 mL 3. Initial NaOH volume _0.25_ mL _0.75_ mL 0.55 mL 4. Final NaOH volume 17.60_ mL 18.20_ mL _17.90_ mL 5. NAOH volume used for titration to reach green end point mL mL mL 6. NaOH volume used for titration 7. Moles of NaOH used for titration mol mel mel 8. Moles of H;PO4 that reacted mol mel mol 9. Volume of H;PO4 added to flask L 10. Molarity of H3PO4 mol/L mol/L mol/L3. Analysis of a mixture consisting of NaOH + Na2CO3 + inert matter gives the following data: 10.00 g. Its aqueous solution is diluted to 250.0 mL and two separate 25.00 mL sample portions are titrated. With one portion, an end point with phenolphthalein is obtained in cold solution, with 44.52 mL of 0.5000 N HCI. The other portion requires 46.53 mL of the acid for an end point with methyl orange. Calculate the percentage composition of the original sample.I need help w/ #3,4,5,6 & 7 thanks 3. What is the concentration of all ionic species present when 100. mL of 0.200 M NH4OH and 100. mL of 0.200 M H2SO4 are mixed.4. Determine the mass of CuS formed when 100. mL of 0.100 M H2S and 50.0 mL of 0.150 M Cu(C2H3O2)2 are reacted. What is the concentration of C2H3O2- in the resulting solution?5. 18.0 g of zinc is added to 100. mL of 0.200M HBr.a) Will all of the zinc dissolve?b) What will be the concentration of Br- in the resulting solution(after any reaction takes place)?6. A 1.25 g sample of impure sodium carbonate requires 18.20 mL of 0.480 M HCl to become completely neutralized. What is the percentage of the sodium carbonate in the original sample?7. 35.0 mL of 0.325 M AgNO3 is added to 50.0 mL of 0.125 M MgCl2. Assuming all volumes are additive, what will be the molarity of all ions in the solution after mixing and after any reaction takes place?(AgCl is not present as ions since it is insoluble.)