22. If you perform an acid base titration and place 50 mL of 0.25 mol/L acetic acid into an Erlenmyer and read the burette initially at 3.5 mL and at the endpoint at 25.2 ml, what is the concentration of the base? (0.576 mol/L)
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- If 48.9 milliliters of 0.240 M oxalic acid are required to titrate 32.6 milliliters of unknown sodium hydroxide: How many moles of acid are used in the titration? How many moles of base are used in the titration? What is the molarity of the unknown NaOH base?3. One erlenmeyer contains 50 mL of 0.1 M Na2CO3 solution, the other erlenmeyer contains 50 mL of 0.1 M NaHCO3 solution. Answer the following questions when both solutions are titrated with 0.1 M HC1 (F=1) solution separately: a) How much mL will be consumed if the phenolphthalein indicator is used? b) How much mL will be consumed if the methyl orange indicator is used?One Erlenmeyer contains 50 mL of 0.1 M Na2CO3 solution, the other Erlenmeyer contains 50 mL of 0.1 M NaHCO3 solution. Answer the following questions when both solutions are titrated with 0.1 M HCl (F=1) solution separately: a) How much mL will be consumed if the phenolphthalein indicator is used? b) How much mL will be consumed if the methyl orange indicator is used? please explain than solve
- Given are the values of a titration experiment of lake water: H2SO4 volume= 25ml H2SO4 diluted to:- 10% Volume of NaOH :- 0.0303L NaOH mil in volume:- 0.00455 mol Base to Acid: - 2:1 What is the concentration of Sulfuric acid (H2SO4) in the sample of lake water?5. One Erlenmeyer contains 50 mL of 0.1 M Na2CO3 solution, the other Erlenmeyer contains 50 mL of 0.1 M NaHCO3 solution. Answer the following questions when both solutions are titrated with 0.1 M HCl (F=1) solution separately: a) How much mL will be consumed if the phenolphthalein indicator is used? b) How much mL will be consumed if the methyl orange indicator is used?A 50.00 (±0.02) mL portion of an HCl solution required 29.71(±0.02) mL of 0.01963(±0.0032) M Ba(OH)2 to reach an end point with bromocresol green indicator. ? of HCL = 29.71?? ? 0.01963 ???? ??(??)2 ?? ? 2 ???? ??? ???? ??(??)2/ 50.00?? = 0.02333 ? Calculate the uncertainty of the result (absolute error).Calculate the coefficient of variation for the result.
- o explain how the result of a titration is affected if you titrate past the end point, calculate the percentage error for one drop past the end point of a 30 mL titration, using a 0.100M NaOH titrant. (Note: The volume of 20 drops is equal to 1 mL.) Select one:a. % error=0.1%;b. % error=0.3%;c. % error=0.2%;d. All options are incorrect;e. % error=0.4%;2. ... V IN の A( Sona Psychology Research Pa x Question 7 of 9 In the titration of 24.0 mL of 0.400 M HCOOH with 0.150 M LIOH, how many mL of LIOH are required to reach the halfway point? 3. 4. 5. 8. 6. MacRook Air esc DD F7 F4 F5 FB F10 F11 F12 & #3 2 3. 5. 9. 8. delete gej aps lock H ret B. control command command option54. According to the titration curve to the right, acid A is 품 9 8 7 6 5 4 3 2 1 Titration Curve of Acid A 0 0 01 02 03 04 05 06 07 08 09 1 OH added (equivalents) A) weak: resists change when 50% titrated. B) strong: resists change when 50% titrated. C) weak; changes dramatically when 100% titrated. D) strong: changes dramatically when 100% titrated. E) It cannot be determined from the information given. because the pH, 55. According to the titration curve to the right, acid A has a pk, of A) 0.2. B) 0.5. C) 3.2. D) 3.8. E) 4.8. 56. According to the titration curve above, acid A has a buffering range of A) 0.3 M to 0.8 MOH. B) 0.9 to 1.0 MOH. C) pH 3.5 to pH 4.2. D) pH 2.8 to pH 3.8. E) pH 2.8 to pH 4.8.
- A solution contains a mixture of NaCO3 and NaOH. Using phenolphthalein indicator 25 mL of mixture required 19.5 mL of 0.995 M HCI for the endpoint. With methyl orange, 25 mL of solution required 25 mL of the same HCl for the endpoint. Calculate grams per liter of NazCO3 in the mixture. A) 23 B 11 78 (D) 3613,How many milliliters of 0.0854 M NaOH are required to titrate 25.00 mL of 0.1250M HI to the equivalence point? Group of answer choices A, 17.08 B, 17.1 C, 36.6 D, no correct answer E, 36.593is it possible to accurately determine the amount of base in the following two brands of antacid using the back titration method? True or false? Explain. The two brands are: 1)Gaviscon with 200 mg of Alginic acid & 40 mg of MgCO3per tablet 2)Alka-Seltzer with 325 mg of Acetylsalicylic acid (ASA), 1700 mg of NaHCO3 & 1000 mg of Citric acid per tablet