For the following show the calculation for both trails b) Volume of NaOH c) moles NaOH d) moles of HAC (hint: use the balance equation to find the mole ratio of acetic acid and NaOH) e) molarity of HAc solution f) Average molarity of the HAC solution from Trail 1 and 2
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- Q7 chapter 15 titration: multimedia activities Solve AsapAt a certain temperature BaF2 has Ksp = 1.7 x 10-6.A solution of concentrated NaF is added dropwise to a solution that is 0.0144 M in Ba2+. What will the concentration of F- be when BaF2 starts precipitating. Neglect volume changes.Provide your answer in E-notation, rounded to 2 significant digits.Complete the following: 1. Random error, also called _________arises from the effects of uncontrolled variables in the measurement. 2. The ____________,measures how closely the data are clustered about mean. 3. The chemical equilibrium in which all the reactants and products are in the same phase are called____________. 4. Reaction that go to completion and never proceed in the reverse direction are said to be_____________ 5. The equation for buffer is the__________equation. 6. A ___________solution is one that resists changes in pH when small quantities of an acid or an alkali added to it. 7. __________is the pH of the pure, neutral and polyprotic
- Suppose a student performed a similar standardization titration experiment. Below is the calculated concentration of NaOH from each of their titrations. Titration #1 Titration #2 Titration #3 The concentration of NaOH (M) 0.9554 0.9540 0.9551 Using the 3 concentrations, calculate the average concentration of the student's NaOH solution and calculate the ± error in parts per thousand (ppt). Show the complete calculation. Express your final answer in the form of average (with units) ± error in ppt.1. A Ringer's solution consists of 140 mEq/L Na+, 5 mEq/L K+, 4 mEq/L Ca2+, and Cl-. The Cl- concentration is: ___________________ mEq/L 2. Which of the following is not correct about suspensions? a. Suspensions have very large particles that may be visible. b. The particles settle slowly upon standing c. Particles can be separated by filters d. Kaopectate and calamine lotion are suspensions e. Particles in suspension is usually smaller than 1 micrometer in diameter4,3 please help with question 4and the continuation question 5
- For the following reaction:H2CO3 + 2 NaOHNa2CO3 + 2 H2O(1) What is the equivalent mass of H2CO3? g/equiv(2) Calculate the number of equivalents in 27.1 grams of H2CO3. equivCalculate the volume of 0.4000M NaOH required to take the reaction of HCl+NaOH>H2O+NaCl to 70% completion after the hydrolysis reaction of 1.0 mL TBC. Given: TBC= .847g/mL TBC= 92.57 g/molQ4, A 10 ml sample of vinegar was diluted in a 100 mL volumetric flask. This was then put in a burette and 15 mL of the diluted vinegar neutralized 10 ml of) 0.1 M NaOH. What is the concentration of vinegar in grams L¹ ? Note: please solve within 30 minutes. Asap
- A sample (50 mL) of a bottled water was added to a 100 mL volumetric flask and then diluted to the mark. From this stock solution, 50 mL was taken, added to a 100 mL volumetric flask and diluted to the mark. Final concentration of the serial dilution: 587.7161ppm. 1. what is the concentration in the original bottle (ppm)A solution is 0.0400M in both CrO42- and SO42-. Slowly, Pb(NO3)2 is added to this solution. What is the concentration of CrO42- that remains in solution when PbSO4 first begins to precipitate?Ksp of PbCrO4 = 2.80×10-13; Ksp of PbSO4 = 1.60×10-8.Provide your answer in E-notation, rounded to 3 significant digits.4.What is the molality of HCl in an aqueous solution in which the mole fraction of HCl is 0.220?A. 15mB. 282mC. 30.9mD. 15.7m.