Ph of Na2C2H3O2 and DI water solution before distillation: 7.0 Ph of Na2C2H3O2 and Di water...
Ph of Na2C2H3O2 and DI water solution before distillation: 7.0
Ph of Na2C2H3O2 and Di water solution after distillation: 6.0
Explain the change in pH between:
a. The starting solution and the distillate you collected.
b. The salt solution before distillation and the undistilled salt solution at the end of the distillation process.
Homework Answers
Part a & Part b.
The solution of NaC2H3O2 in DI water (de-ionized water) is almost neutral, hence its pH before distillation is ~ 7.
But, during the distillation, the following hydrolysis reaction takes place.
CH3COO- + H2O <----> CH3COOH + OH-
i.e. The solution of NaC2H3O2 becomes a solution of HC2H3O2, which is less acidic and has pH in the range of 4 to 7.
Hence, the pH of a solution of NaC2H3O2 in DI water (de-ionized water) after distillation is ~ 6.
Add Answer to:
Ph of Na2C2H3O2 and DI water solution before distillation:
7.0
Ph of Na2C2H3O2 and Di water...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of distillate you collected, calculate the new mole fraction of ethanol in the undistilled solution that remained in the distillation flask. The volume of distillate collected is 6.2 mL.
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of distillate you collected, calculate the new mole fraction of ethanol in the undistilled solution that remained in the distillation flask. The volume of distillate collected is 6.2 mL.
pH of a buffer solution pH and Buffers IV pH of a Buffer Solution A.2019 Mass of sodium acetate, CH,COONa, g Mea...
pH of a buffer solution
pH and Buffers IV pH of a Buffer Solution A.2019 Mass of sodium acetate, CH,COONa, g Measured pH Calculated pH buffer solution prepared with dissolved CH,COONa +8.5 mL CH,COOH (aq) 5.54 40 mL buffer + 1.0 mL of 6.0 M HCI (aq) 4/.ces 40 mL buffer + 1.0 mL of 6.0 M NaOH (aq) 5.02 Calculated pH Measured pH 5,54 deionized water 40 mL DI water +1.0 mL of 6.0 M HCI (aq) 1.C03 40...
22) At what pH is hydrofluoric acid 75% dissociated? (K. (HF) = 3.5 x 104) A)...
22) At what pH is hydrofluoric acid 75% dissociated? (K. (HF) = 3.5 x 104) A) 2.98 B) 3.93 C) 3.33 D) 3.58 E) Something else Use the proper number of significant figures, and make sure your results have units. No improper math. For parts a) and c), you can "buy" the starting equation for 2 points if you are stuck. 1) The pH of water in an aquarium must be kept between 6.0 and 7.0 to ensure the health...
pH and Buffers IV. pH of a Buffer Solution Mass of sodium acetate, CH,COONa, g 4.2009...
pH and Buffers IV. pH of a Buffer Solution Mass of sodium acetate, CH,COONa, g 4.2009 COOM Calculated pH Measured pH buffer solution prepared with dissolved CHCOONa+ 8.5 mL CH, COOH(aq) 5.54 40 mL buffer + 1.0 mL of 6.0 M HCl(aq) 14.05 40 mL buffer + 1.0 mL of 6.0 M NaOH(aq) 5.02 Calculated pH Measured pH 5.54 1063 deionized water 40 mL DI water + 1.0 mL of 6.0 M HCl (aq) 40 mL DI water + 1.0...
3.What happens to the pH of your buffer solution when you dilute it with DI water?...
3.What happens to the pH of your buffer solution when you dilute it with DI water? Why? How does this compare to the dilutions of the solution containing just acid or base? 7.Explain and justify when and why it is NOT appropriate to use the Henderson-Hasselbalch equation to calculate the pH of a solution. You should address both (1) what kinds of components should/should not be present, and (2) their relative concentrations.
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that...
Assemble the glassware for fractional distillation according to the diagram and discussion above. Make certain that all joints are secure and that the apparatus is appropriately supported. Remember to allow for space below the distillation flask for the heating mantle and below the receiving flask for an ice bath. Pay extra attention to the positioning of the bulb of the thermometer as mentioned in the introduction. It is critical that the thermometer be positioned correctly for accurate temperature measurement. Using...
IV. Comparing Buffering Capacity A. pH of Pure Water i. Measure out 30.0 mL DI H2O...
IV. Comparing Buffering Capacity A. pH of Pure Water i. Measure out 30.0 mL DI H2O into a beaker. 1. Calculate the expected pH of pure water. pH ________ 2. Measured pH of pure water. pH ___3.88______ 3. What is the percent error between the calculated and measured value? What are some of the possible sources of this error? % error __________ B. pH of Water and Strong Acid i. Measure out 30.0 mL DI H2O and 2.0...
find pH is this right im confusing myself a bit we ? for calculehen Calculated pH...
find pH
is this right im confusing myself a bit
we ? for calculehen Calculated pH Measured pH 4.54 deionized water should be 7 40 mL DI water + 1.0 mL of 6.0 M HCl(aq) 40 mL DI water + 1.0 mL of 6.0 M NaOH(aq) 1.57 11.93 Compare the change in pH you observed when 1.0 mL of 6.0 M HCl is added to 40 mL of the buffer versus 40 mL of water. Is there a difference, and...
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric...
4. What molar ratio of HPO4 2-to H2PO4-in solution would produce a pH of 7.0? Phosphoric acid (H3PO4), a triprotic acid, has 3 pKa values: 2.14, 6.86, and 12.4. Hint: Only one of the pKa values is relevant here. 5. For a weak acid with a pKaof 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0. 6. Which of these compounds would be the best buffer at pH 5.0: formic acid (pKa 3.8), acetic acid...
pH of a buffer solution
pH and Buffers IV pH of a Buffer Solution A.2019 Mass of sodium acetate, CH,COONa, g Measured pH Calculated pH buffer solution prepared with dissolved CH,COONa +8.5 mL CH,COOH (aq) 5.54 40 mL buffer + 1.0 mL of 6.0 M HCI (aq) 4/.ces 40 mL buffer + 1.0 mL of 6.0 M NaOH (aq) 5.02 Calculated pH Measured pH 5,54 deionized water 40 mL DI water +1.0 mL of 6.0 M HCI (aq) 1.C03 40...
22) At what pH is hydrofluoric acid 75% dissociated? (K. (HF) = 3.5 x 104) A) 2.98 B) 3.93 C) 3.33 D) 3.58 E) Something else Use the proper number of significant figures, and make sure your results have units. No improper math. For parts a) and c), you can "buy" the starting equation for 2 points if you are stuck. 1) The pH of water in an aquarium must be kept between 6.0 and 7.0 to ensure the health...
pH and Buffers IV. pH of a Buffer Solution Mass of sodium acetate, CH,COONa, g 4.2009 COOM Calculated pH Measured pH buffer solution prepared with dissolved CHCOONa+ 8.5 mL CH, COOH(aq) 5.54 40 mL buffer + 1.0 mL of 6.0 M HCl(aq) 14.05 40 mL buffer + 1.0 mL of 6.0 M NaOH(aq) 5.02 Calculated pH Measured pH 5.54 1063 deionized water 40 mL DI water + 1.0 mL of 6.0 M HCl (aq) 40 mL DI water + 1.0...
3.What happens to the pH of your buffer solution when you dilute it with DI water? Why? How does this compare to the dilutions of the solution containing just acid or base? 7.Explain and justify when and why it is NOT appropriate to use the Henderson-Hasselbalch equation to calculate the pH of a solution. You should address both (1) what kinds of components should/should not be present, and (2) their relative concentrations.
find pH
is this right im confusing myself a bit
we ? for calculehen Calculated pH Measured pH 4.54 deionized water should be 7 40 mL DI water + 1.0 mL of 6.0 M HCl(aq) 40 mL DI water + 1.0 mL of 6.0 M NaOH(aq) 1.57 11.93 Compare the change in pH you observed when 1.0 mL of 6.0 M HCl is added to 40 mL of the buffer versus 40 mL of water. Is there a difference, and...
Most questions answered within 3 hours.
-
Via Gelato is a popular neighborhood gelato shop. The company
has provided the following cost formulas...
asked 15 minutes ago -
The Williams have a stock they have held for over a year that
they believe is...
asked 1 hour ago -
11.53g sample of NaBr contains 22.34% Na by mass Considering
the law of constant composition how...
asked 2 hours ago -
Exercise 5-22A Complete the accounting cycle using receivable
transactions (LO5–1, 5–2, 5–4, 5–5, 5–7) [The following...
asked 2 hours ago -
Do you agree with the view that small businesses are more
vulnerable to employee theft because...
asked 3 hours ago -
Four forces act on an object, given by A = 41.3 N east, B = 46.3...
asked 3 hours ago -
Which of the following design considerations leads to more
user-friendly presentation layers for GUIs? [Check all...
asked 4 hours ago -
38%
of adults say cashews are their favorite kind of nut. You
randomly select 12 adults...
asked 6 hours ago -
Notational Inc. is considering installing a new server. The
machine costs $100,000 and is expected to...
asked 6 hours ago -
Given the information coding of DNA strand:
5'-TTT-TAC-GAA-GAG-TGA-3',
Write the corresponding DNA template and mRNA strand...
asked 7 hours ago -
2. Boris recently synthesized an explosive compound he named
Badenoughium. The molecular formula for Bdenoughium is...
asked 10 hours ago -
5. A car decelerate evenly from a velocity of 50mph until rest
in a distance of...
asked 10 hours ago