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I need to know if I calculated the acetate buffer correctly & how to calculate the...

I need to know if I calculated the acetate buffer correctly & how to calculate the change in pH when HCl is added...
The following should be attached to this worksheet: 2 plots of volume vs. pH data. Data sheet stapled to back of DRA. 1. Calc
Analyzing Buffers 3. Calculate the pH of the acetate buffer after 16.00 mL. 0.100 M HCl has been added Calculation: 4. Calcul
Health, Safety, and Environmental (HS&E) Ite Wear appropriate eye protection at all times. Handle acids and bases; nitrile gl
Equipment 100 ml beakers 100 mL beaker buret buret clamp ring stand stir bar stir plate 10 ml volumetrie pipet 50 ml graduate
The following should be attached to this worksheet: 2 plots of volume vs. pH data. Data sheet stapled to back of DRA. 1. Calculate the pH of the acetate buffer. Show the calculation below. Calculation: Ho t t 419 [Cathoz ot pH= pkatlog HGH sos] ΠpH=4.745 + log NAH ** = 4.65 (0.2 m m 2. Calculate the pH of the acetate buffer after 4.00 mL 0.100 M HCl has been added. Calculation:
Analyzing Buffers 3. Calculate the pH of the acetate buffer after 16.00 mL. 0.100 M HCl has been added Calculation: 4. Calculate the pH of the acetate buffer after 28.00 mL 0.100 M HCl has been added. Calculation:
Health, Safety, and Environmental (HS&E) Ite Wear appropriate eye protection at all times. Handle acids and bases; nitrile gloves are available for prot acid or base from exposed skin with large amounts TA. All solutions should be colleced in a 400 ml be bottles in the hood. Chemicals 0.160 M NaC,H,O,/0.200 M HC,H,O, 0.160 M NH C1 / 0.200 M NH, 0.100 M NaOH 0.100 M HCl 224
Equipment 100 ml beakers 100 mL beaker buret buret clamp ring stand stir bar stir plate 10 ml volumetrie pipet 50 ml graduated cylinder buret funnel pipet pump Vernier pH probe Experimental Procedure Part A: Addition of strong acid to acetate buffer and ammonia bu 1. Attach the pH probe to the Vermierinde Gently remove the cap probe. Rinse the bottom of the besh disilled water from the squeen the runoff in a beaker of water. Submerge the tip of the pH probe into program associated with this experiment. remove the cap from the bottom of the pH 1 water from the squeeze bottles while catching of the pH probe into the water. Open the Vernier Ising a volumetric pipet, transfer 10.00 ml water to the bear buffer to a clean and dry 100 ml beaker. illed water to the beaker. Place a stir bar in the COLLECT and ask your TA to check the Record an initial pH reading (click KEEP your TA OG KEEP 2. Using a volumetric pipet, transfer 10,00 ml acetate buffer to a clean Using a graduated cylinder, transfer 30.0 mL distilled water to the beak beaker and insert the pH probe into the solution Click on COLLECT and ask initial pH of the buffer before you begin to keep data. Record an initial in Logger Pro) next to the initial volume reading. 3. Clean and condition a buret with the HCl solution. Using the burel, add .0 HCl to the buffer. Record the pH in Logger Pro. Repeat six addi mL HCl has been added. P sing the buret, add 4.00 mL of the 0.100 M in Logger Pro. Repeat six additional times until a total of 28.00 4. Perform a second trial of HCl additions with a fresh sample of acetate butter. 5. Repeat steps 2-4, exchanging the acetate buffer with the ammonia buffer Part B: Addition of strong base to acetate buffer and ammonia buffer 1. Using a volumetrie pipet, transfer 10.00 ml acetate buffer to a clean and dry 100 ml beaker. Using a graduated cylinder, transfer 30.0 mL distilled water to the beaker. Place a stir bar in the beaker and insert the pH probe into the solution. Click on COLLECT and ask your TA to check the initial pH of the buffer before you begin to keep data. Record an initial pH reading (click KEEP in Logger Pro) next to the initial volume reading. Clean and condition a buret with the NaOH solution. Using the buret, add 4.00 mL of the 0.100 M NaOH to the buffer. Record the pH in Logger Pro. Repeat six additional times until a total of 28.00 ml NaOH has been added. 2. 3. Perform a second trial of NaOH additions with a fresh sample of acetate buffer. 4. Repeat steps 1-3, exchanging the acetate buffer with the ammonia buffer.
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Answer #1

(2 ) In 10 mL buffer solution which is diluted by 30 mL of distilled water 0.1 M , 4 mL HCl is added.

since acetate is basic part of buffer solution it will react with added HCl solution.calculation is as following mo! 4 се, съон IX comLx 1 Litre = ( 0.2 mol lite 1000ML -4 mol =20810 mol = 2x16 mol of sodium Acetate ܐ ܘ хом х L1 370.16 miChocou + H CH₃COOH ? —4 ~ 4 - ч 20х10 ме! чт 10 мг) ч.. 16x10 mol -ч -Ч — Ч - чx to мo -Чxo hol + MY16 | - ч. 12r10 mal - a

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