What's in your Bucket (write the molecule and what type--WB, WA, SA, SB, buffer, or water) before and after adding 2.5 mL of 1.0 M NAOH? Estimate the pH (<< 7 = SA, < 7 = WA, = 7 neutral, > 7 WB, >> 7 SB). Write all reactions and/or chemical equilibrium shifts that occur and show all stoichiometry. 1) 25ml of o.1m (5AgNHCIO4 Also, Find Thep' Before After

What's in your Bucket (write the molecule and what type--WB, WA, SA, SB, buffer, or water) before and after adding 2.5 mL of 1.0 M NAOH? Estimate the pH (<< 7 = SA, < 7 = WA, = 7 neutral, > 7 WB, >> 7 SB). Write all reactions and/or chemical equilibrium shifts that occur and show all stoichiometry. 1) 25ml of o.1m (5AgNHCIO4 Also, Find Thep' Before After

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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2) How many moles of methylammonium chloride (CH;NH;CI) are needed to prepare a buffer that is pH 9.64 and contains 0.15 moles methylamine (CH;NH2)? pK», CH;NH2 =3.36 *Show calculations!*
2) How many moles of methylammonium chloride (CH;NH;Cl) are needed to prepare a buffer that is pH 9.64 and contains 0.15 moles methylamine (CH;NH2)? pK», CH;NH2 = 3.36 *Show calculations!*
You want to use acetic acid (pka=4.75) and NaOH to prep 1 liter 0.1 M buffer solution with a pH= 5.0. Keeping in mind that conc of acetic acid + conc of acetate= 0.1 M, how many moles of acetic acid and NaOH would you need to add to 1 L of water?
please answer on 1-a,b,c,d. Clear handwriting or type in, thank you! 1. The mixture of anions is an effective blood buffer with the following acid-base equilibrium: HO" (aq) + HPO* (aq) H:POs (aq) + H;O (1) a. For the equilibrium above, what is the effect of decreasing the pH? (give shift) b. As a result of the shift, which ion H:PO, or HPO, would appear to increase? c. For the equilibrium above, what is the effect of increasing the pH? (give shift) d. As a result of the shifl, which ion H:PO, or HPO would appear to increase?
rs in Blood 6 of 16 I Review Constants | Periodic Table Part B At a pH of 7.40, what is the ratio of the molar concentrations of HPO4 to H2PO4 ? 2- Express your answer using two significant figures. • View Available Hint(s) ΑΣΦ [HPO,²-| [H,PO,"]
9. To prepare a basic buffer of pH=10 how many grams of NH,Cl would you add to 100 ml of 0.1 M NH¸OH ? (K,(NH,OH) =1.84-10³ mol/L; molar mass of NH,Cl = 53.5 g/mol). %3D
What's in your Bucket (write the molecule and what type--WB, WA, SA, SB, buffer, or water) before and after adding 2.5 mL of 1.0 M NaOH? Estimate the pH ( 7 WB, >> 7 SB). Write all reactions and/or chemical equilibrium shifts that occur and show all stoichiometry. %3D 1) 25 mL of 0.1 M Hcl Before After
If we have a 25 mL solution of weak acid HA (Ka = 1,00 * 10-6) and at pH 4,00. How much water needs to be added to change the pH to 5.5?
A 5.50 g sample of a weak acid with Ka 1.3 x 101 -4 was combined with 5.20 mL of 6.00 M NaOH and the resulting solution was diluted to 750 mL. The measured pH of the solution was 4.15. Part A What is the molar mass of the weak acid? || ΑΣΦ M = 417.93 Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining ? g/mol
5. a) The Kw value that we normally use is for room temperature (25°C). Calculate the equilibrium H+ concentration and pH of pure, neutral water at 0.0°C (Kw= 1.14 x 10-15at 0.0°C) b) Methylamine (CH3NH2) is a derivative of the weak base ammonia. Write the equation for the ionization of methylamine in water, and use the I.C.E. method to find the pH of a 3.75 M CH3NH2 solution.(Kb= 4.37 x 10-4at 25°C)
This is about determinition of acid content in vinegar through titration, please answer the questions. Please answer only the items nummber 4-5. i only put other questions for guide. 1. What is the purpose of standardization? 2. What is the primary standard used (name and formula)? ANS: KHP 3. Suppose that the KHP is not completely dry. Will the reported molar concentration of the sodium hydroxide solution be higher, lower, or unaffected? Explain. 4. In preparing the buret for titration the final rinse is with the NaOH titrant rather than with distilled water. Explain. 5. The procedure suggests the addition of only 2 drops of phenolphthalein. What will be the effect to the analysis if larger amount of phenolphthalein is added?
Vinegar? required to neutralize the acetic acid in each sample of vinegar, 16. Complete the calculations to find the molarity and percentage of acetic acid in vinegar. Convert the average volume of NaOH required to reach endpoint from mL to L Average volume of NaOH required to reach endpoint in mL 15. Subtract the initial volume from the final volume to calculate the volume of NaOH I DATA 269 12.55 TITRATION DATA (REPORT YOUR VOLUMES TO 1/100TH MI TRIAL 1 TRIAL 2 Initial base buret reading Final base buret reading Volume of sodium hydroxide (NaOH) required to reach endpoint in mL Volume of vinegar used O15 12.55 TRIAL 3 12:55 24.11 EXTRA TRIAL 24.11 35.39 11.78 12.05 11.56 15.00 mL 15.00 mL 15.00 mL 15.00 mL (Show calculations here.) 12.05711-56+1178 -27.54 27.54ML (Show calculations here.) a7.54ML X IL 0-02754L :0.02754L nd bon 1600 Molarity of NAOH (recorded from the standard solution bottle) 0.1 I CALCULATIONS FOR MOLARITY OF ACETIC ACID IN VINEGAR 1. Using the known molarity of…