25.0 mL of 2.8 M NH3(aq) was added to 20.0 mL of 1.5 M HCl(aq) and the mixture was stirred, then tested with a pH meter. Complete the following table based on the reaction. NH3 HCI NH4CI Beginning/mol choose yo v choose ycv choose your an Reaction/mol choose yo choose y
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- The acid dissociation constant of acetic acid in methanol is 3.02 × 10-¹0. Calculate the pH of the following solutions in acetic acid: 36. 0.035 M CH3COOH a. 3.10 b. 5.49 37. 0.035 M CH3COOH + 0.070 M CH3COONa a. 4.44 b. 5.05 38. 0.035 M CH3COONa a. 2.97 b. 4.32 c. 6.90 c. 9.22 c. 11.03 d. 8.51 d. 9.82 d. 12.38Mola and Rity were tasked to analyze the acidity of a 10.0-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 15.0-mL aliquot of this solution, diluted it to 50.0 mL, and then titrated this diluted sample. Titration data were given to Rity and she found out that the 50.0-mL diluted sample contains 0.21 mmol of lactic acid. MW: Lactic Acid (90.08) a. What is the lactic acid concentration (in M) of the titrated sample? b. Determine the lactic acid content (in M) of the 10.0-mL fermented milk sample. c. What is the lactic acid concentration (in %w/v) of the 10.0-mL fermented milk sample?Mola and Rity were tasked to analyze the acidity of a 10.0-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 15.0-mL aliquot of this solution, diluted it to 50.0 mL, and then titrated this diluted sample. Titration data were given to Rity and she found out that the 50.0-mL diluted sample contains 0.21 mmol of lactic acid. MW: Lactic Acid (90.08) Follow proper significant figure rulesa. What is the lactic acid concentration (in M) of the titrated sample? b. Determine the lactic acid content (in M) of the 10.0-mL fermented milk sample. c. What is the lactic acid concentration (in %w/v) of the 10.0-mL fermented milk sample?
- Lola and Richie were tasked to analyze the acidity of a 10.0-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 15.0-mL aliquot of this solution, diluted it to 50.0 mL, and then titrated this diluted sample. Titration data were given to Rity and she found out that the 50.0-mL sample contains 0.21 mmol of lactic acid. MW: Lactic Acid (90.08)1.What is the lactic acid concentration (in M) of the titrated sample?2. Determine the lactic acid content (in M) of the 10.0-mL fermented milk sample.3. What is the lactic acid concentration (in %w/v) of the 10.0-mL fermented milk sample?5. The reaction that takes place when a strong acid is added to an acetic acid- acetate buffer (CH;COOH/CH;CO0') is A. CH3COOH + H* B. CH3COOH + H* C. CH;COO' + H* D. CH;COOH + H* CH;COO` + H2O CH4 + CO2 CH;COOH * CH;COO' + H2You made a pH 9.0 buffer solution at 25° C by mixing NaOH and histidine (HisH) to give a solution that is 0.200 M in total concentration of histidine. Deprotonation constants and enthalpies (heats) of deprotonation at 25°C Compound Deprotonation Histidine Water ▼ +H3NRH+COOH+H₂NRH COO + H+ +H3NRH+COOH3NRCOO¯ + H+ +H3NRCOO →H₂NRCOO + H H₂O-OH + H¹ Part O [Na] = Calculate the concentration of Na+ at 45 °C. Express your answer using two significant figures and include the appropriate units. Submit [H+] = 0 Ti μA Value Part N Request Answer μA Calculate the concentration of H+ at 45 °C. Express your answer using two significant figures and include the appropriate units. Value Submit Request Answer μA [OH-] = Value Submit Request Answer pK A, H° (kJ mol ¹) 1.80 6.04 9.33 14.00 Units 4 Units Calculate the concentration of OH at 45 °C. Express your answer using two significant figures and include the appropriate units. Units 29.9 46.6 55.82 ? ? ?
- Mola and Rity were tasked to analyze the acidity of a 10.0-mL fermented milk sample diluted with water in a 250-mL volumetric flask. Mola obtained a 15.0-mL aliquot of this solution, diluted it to 50.0 mL, and then titrated this diluted sample. Titration data were given to Rity and she found out that the 50.0-mL diluted sample contains 0.21 mmol of lactic acid. What is the lactic acid concentration (in M) of the titrated sample?You are given 0.7 M solution of the amino acid Lysine. pK1 (α-carboxyl group) = 2.18 pK2 (α- amino group) = 8.95 and pK3 (Side chain) = 10.53 Answer the following questions. a. Determine the pH of the solution if you add 26 mL 0.3 M HCl to 12 mL of the 0.7 M Lysine. Assume that Lysine is in isotonic state. Show all calculations. b. Draw the structure of the amino acid at the pH determined in question aDraw and calculate the ratio of the 2 species in aqueous solution (buffer) at pH of 7 ÇOO- TH CH2 1. H2C CH2 H2N Proline keep the same format.thank you
- Phenol is a functional group that is readily ionized by adjusting the pH of the aqueous solution during an extraction. What is the neutral and ionized form? How do you convert the neutral to the ionized form?Each row represents an experimental “run” (in this case, averaged sample of mango wine). Column A shows the run number; Column B shows the percentage of ethanol; Column C shows the amount of glycerol (in g/L); Column D shows the amount of acid (in g/L); Column E shows the temperature of the run (in °C); and Column F shows the pH of the run. Y represents Ethanol of mango wine. 1. Create a scatterplot of the ethanol data for all 20 runs a. Draw a graphical representation of the model that you chose to use. b. Comparing the model to your data, evaluate its fit in one or two sentences. (Not sure what this question is getting at. I've provided all the information given) c. Replace the generic Yi = β0 + ε with the information you have here. Please help. I have no idea what this even means or where to start. HERE is the attached dataset to start with; a b c d e f Run Ethanol Glycerol Acidity Temp pH 1 4.8 3.5 0.84 24 3.8 2 9.6…Amino acids have different protonation states at different pH. The protonation states of the amine and carboxylic acid functional groups can vary at different pH. In addition, the side chain can have different ionic states. Choose the protonation state of lysine at physiological pH. H₂N- H NH₂ I OH H₂N. H₂N H 0=6 NH₂ IV NH₂ || OH H₂N. H H₂N H NH₂ O V NH₂ |||
