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- A 10.00-g sample of the ionic compound NaA, where A is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl. After 500.0 mL HCl was added, the pH was 5.00. The experimenter found that 1.00 L of 0.100 M HCl was required to reach the stoichiometric point of the titration. a. What is the molar mass of NaA? b. Calculate the pH of the solution at the stoichiometric point of the titration.In a titration of cyanide ion, 28.72 mL of 0.0100 M AgNO3 is added before precipitation begins. [The reaction of Ag+ with CN- goes to completion, producing the Ag(CN)2- complex. Precipitation of solid AgCN takes place when excess Ag+ is added to the solution, above the amount needed to complete the formation of Ag(CN)2-. How many grams of NaCN were in the original sample?A diprotic acid, H2B(MM=126g/moL), is determined to be a hydrate, H2B xH2O. A 10.00-g sample of this hydrate is dissolved in enough water to make 150.0 mL of solution. Twenty-five milliliters of this solution requires 48.5 mL of 0.425 M NaOH to reach the equivalence point. What is x?
- A 45.0-mL sample of 0.0015 M BaCl2 was added to a beaker containing 75.0 mL of 0.0025 M KF. Will a precipitate form?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 ?Prepared buffer solution GivenAmmonia Volume = 68 mL | Ammonia Concentration = 0.17 MAmmonium Chloride Volume = 42 mL | Ammonium Chloride Concentration = 0.13 MDissociation Constant of Ammonia: 1.8x10-5What is the total vol. of buffer
- 96% [4) Wed 3:41 AM Jarissa Collado Q A cvg.cengagenow.com My Home OWLV2 | Online teaching and learning resource from... [Review Topics] (References] Use the References to access important values if needed for this question. M Solid lead nitrate is slowly added to 75.0 mL of a 0.0486 M sodium iodide solution. The concentration of lead ion required to just initiate precipitation is s 2req M. Es M ts M Submit Answer Retry Entire Group ts 2req 8 more group attempts remaining Previous Next problem set O Focus 92%9:44 AM Fri Nov 27 令24% AA A sjc.cengagenow.com + E Football Latest Line... F5 Dynamic... Group Resea... Mastery 10-15 OWLV2 | Onli... C Search Text... C dept.cld G SIERRA SIERRA Module 10-12 [Review Topics] [References] 1. Buffer Solutions: Identify Buffer 2 pts M Use the References to access important values if needed for this question. A buffer solution is made that is 0.341 M in H2S and 0.341 M in 2. Buffer Solutions: Write Equation ... 2 pts 2req Question KHS. Question If Question Kal for H2S is 1.00 x 10-, what is the pH of the buffer solution? 3. Buffer Solutions: Buffer Capacity... 2 pts 2req pH Write the net ionic equation for the reaction that occurs when 0.095 mol HBr is added to 1.00 L of the buffer solution. (Use the lowest ble coefficients. Omit states of matter. Use H3 O* instead of Ht) + Submit Answer Retry Entire Group 8 more group attempts remaining Progress: 1/3 groups Due Nov 28 at 11:55 PM Previous Next Finish Assignment Save and ExitPrepared buffer solution GivenAmmonia Volume = 68 mL | Ammonia Concentration = 0.17 MAmmonium Chloride Volume = 42 mL | Ammonium Chloride Concentration = 0.13 MDissociation Constant of Ammonia: 1.8x10-5What is the final concentration of the base
- O KINETICS AND EQUILIBRIUM 三 Calculating the solubility of an ionic compound when a commo... olh Data Formula Ksp Calculate the solubility at 25 °C of CaF, in pure water and in a 0.0180M NaF solution. BaCro4 1.17x10-10 BasO4 1.08x10-10 Round both of your answers to 2 significant digits. CaCO3 3.36x10-9 CaF2 3.45x10-11 solubility in pure water: Co(OH)2 5.92x10-15 CuBr 6.27x10-9 CuCO3 1.4x10-10 solubility in 0.0180 M NaF solution: Fe(OH)2 4.87x10-17 PBCO3 7.40x10-14 PbCrO4 2.8x10-13 PBF2 3.3x10-8 Mg(OH)2 5.61x10-12 Ni(OH)2 5.48x10-16 AgBrO3 5.38x10-5 Ag2CO3 8.46x10-12 AgCI 1.77x10-10 Ag2Cr04 1.12x10-12 SrC03 5.60x10-10 ZnCO3 1.46x10-10 Zn(OH)2 3.0x10-17 AgBr 5.35x10-13 AuCl 1.77x10-10 Check O2021 McGraw-Hill Education. All Rights Reserved Temms of UseEdit View History Bookmarks Profiles Tab Window Help 1) * 33% 4 Thu 11:56 AM !! 101 Chem101 PDF A app.101edu.co 山 ☆ Tp ● Update: ΟΥΜΕΝ T | Form.pdf Question 6 of 10 Submit al Determine the pH of a buffer formed by dissolving 21.5 g HC,H,O2 and 37.7 g of NaC,H;O2 in 200.0 mL of solution. The value of Ka for HC,H;O2 is 6.3 x 10-5. ody 2.pdf K PREV 1 2 3 Based on your ICE table and Ka expression, determine the pH of the solution. pH %3D 5 RESET 4.2 x 10-5 6.23 4.37 2.4 x 10 11 7.77 9.63 0.880A buffer solution contains 0.487 M CH,NH,Cl and 0.252 M CH,NH, (methylamine). D the pH change when 0.058 mol KOH is udded to 1.00 Lof the buffer. etemine pH ater addition - pli before addition- pH change-( Submit Answer Retry Entire Group more group attempts remaining Determine the pHi change when 0.080 mol HCIO, is added to 1.00 Lof a buffer solution that is 0.340 M in CH,COOH and 0.283 M in CH,COO". pH after addition - pH before addition pl change -[ Submit Answer Retry Entire Group 9 more group attempts remaining