Provide the balanced reaction for this experiment? a piece of weigh paper (or weigh boat) and tare it out on the balance. Weigh out between 1.000 to 1.200 g of KHP. Record the exact mass in your data table for Trial 1. Pour your KHP sample in flask #1. (4) Repeat step 3 two more times for flasks #2 a nd #3. (5) To each flask, add approximately 30 mL of distilled water. Warm the flasks slightly and swirl them until all the KHP is dissolved. (6) Obtain about 250 mL of NaOH in a clean, dry 250 mL Erlenmeyer flask. Stopper the flask until you are rea dy for the solution in step 6d. (7) Obtain one buret and clean it. (a) First, rinse the buret a couple of times with tap water, pouring the water from a beaker. (b) Then, scrub the buret with a detergent solution, using a long - handled buret brush. (c) Next, rinse out the detergent with tap water several times and finally with distilled water. Be sure to also drain through the tip. (d) After draining the distilled water, rinse the buret with two 5 to 10 mL portions of the titrating solution, Na OH. This rinsing is done by holding the buret in a horizontal position and rolling the solution around to wet the entire inner surface. Allow the final rinse to drain through the tip. (8) Fill the buret with NaOH, making sure that the tip is completely filled and contains no air bubbles. Adjust the level of the liquid in the buret so that the bottom of the meniscus is at exactly 0.00 mL. Record the initial reading in your data table. (9) Add 3 drops of phenolphthalein solution to each 125 mL flask containing KHP and water. (10) Place flask #1 on a piece of white paper under the buret. Be sure to extend the tip of the buret into the flask. (11) Titrate the KHP sample by adding NaOH until the end - point is reached. The titration is conducted b y swirling the solution in the flask with your dominant hand while manipulating the stopcock with your other hand. As base is added you will observe a pink color caused by localized high base concentration. As you near the end - point, the color flashes th roughout the solution, remaining for a longer time. When this occurs, add the base drop by drop until the end - point is reaches, as indicated by the first drop of base which causes a faint pink color to remain in the entire solution for at least 30 seconds . Record the final buret reading in your data table. (12) Refill the buret, if necessary. (13) Repeat steps 10 - 12 for flasks #2 and #3. (14) Upon completion of your titrations, place all solutions into the appropriate waste container. (15) Rinse t he buret at least twice with tap water and once with distilled water (including the tip)

Provide the balanced reaction for this experiment? a piece of weigh paper (or weigh boat) and tare it out on the balance. Weigh out between 1.000 to 1.200 g of KHP. Record the exact mass in your data table for Trial 1. Pour your KHP sample in flask #1. (4) Repeat step 3 two more times for flasks #2 a nd #3. (5) To each flask, add approximately 30 mL of distilled water. Warm the flasks slightly and swirl them until all the KHP is dissolved. (6) Obtain about 250 mL of NaOH in a clean, dry 250 mL Erlenmeyer flask. Stopper the flask until you are rea dy for the solution in step 6d. (7) Obtain one buret and clean it. (a) First, rinse the buret a couple of times with tap water, pouring the water from a beaker. (b) Then, scrub the buret with a detergent solution, using a long - handled buret brush. (c) Next, rinse out the detergent with tap water several times and finally with distilled water. Be sure to also drain through the tip. (d) After draining the distilled water, rinse the buret with two 5 to 10 mL portions of the titrating solution, Na OH. This rinsing is done by holding the buret in a horizontal position and rolling the solution around to wet the entire inner surface. Allow the final rinse to drain through the tip. (8) Fill the buret with NaOH, making sure that the tip is completely filled and contains no air bubbles. Adjust the level of the liquid in the buret so that the bottom of the meniscus is at exactly 0.00 mL. Record the initial reading in your data table. (9) Add 3 drops of phenolphthalein solution to each 125 mL flask containing KHP and water. (10) Place flask #1 on a piece of white paper under the buret. Be sure to extend the tip of the buret into the flask. (11) Titrate the KHP sample by adding NaOH until the end - point is reached. The titration is conducted b y swirling the solution in the flask with your dominant hand while manipulating the stopcock with your other hand. As base is added you will observe a pink color caused by localized high base concentration. As you near the end - point, the color flashes th roughout the solution, remaining for a longer time. When this occurs, add the base drop by drop until the end - point is reaches, as indicated by the first drop of base which causes a faint pink color to remain in the entire solution for at least 30 seconds . Record the final buret reading in your data table. (12) Refill the buret, if necessary. (13) Repeat steps 10 - 12 for flasks #2 and #3. (14) Upon completion of your titrations, place all solutions into the appropriate waste container. (15) Rinse t he buret at least twice with tap water and once with distilled water (including the tip)

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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Related questions

Question

Provide the balanced reaction for this experiment?

a piece of weigh paper (or weigh boat) and tare it out on the balance. Weigh out between

1.000 to 1.200 g of KHP. Record the exact mass in your data table for Trial 1. Pour your KHP sample in

flask #1.

(4) Repeat step 3 two more times for flasks #2 a

nd #3.

(5) To each flask, add approximately 30 mL of distilled water. Warm the flasks slightly and swirl them

until all the KHP is dissolved.

(6) Obtain about 250 mL of NaOH in a clean, dry 250 mL Erlenmeyer flask. Stopper the flask until you are

rea

dy for the solution in step 6d.

(7) Obtain one buret and clean it.

(a) First, rinse the buret a couple of times with tap water, pouring the water from a beaker.

(b) Then, scrub the buret with a detergent solution, using a long

handled buret brush.

Be sure to also drain through the tip.

(d) After draining the distilled water, rinse the buret with two 5 to 10 mL portions of the titrating

solution, Na

OH. This rinsing is done by holding the buret in a horizontal position and rolling the

solution around to wet the entire inner surface. Allow the final rinse to drain through the tip.

(8) Fill the buret with NaOH, making sure that the tip is completely

filled and contains no air bubbles.

Adjust the level of the liquid in the buret so that the bottom of the meniscus is at exactly 0.00 mL. Record

the initial reading in your data table.

(9) Add 3 drops of phenolphthalein solution to each 125 mL flask

containing KHP and water.

(10) Place flask #1 on a piece of white paper under the buret. Be sure to extend the tip of the buret into

the flask.

(11) Titrate the KHP sample by adding NaOH until the end

point is reached. The titration is conducted b

swirling the solution in the flask with your dominant hand while manipulating the stopcock with your

other hand. As base is added you will observe a pink color caused by localized high base concentration.

As you near the end

point, the color flashes th

roughout the solution, remaining for a longer time. When

this occurs, add the base drop by drop until the end

point is reaches, as indicated by the first drop of base

which causes a faint pink color to remain in the entire solution for at least 30 seconds

. Record the final

buret reading in your data table.

(12) Refill the buret, if necessary.

(13) Repeat steps 10

12 for flasks #2 and #3.

(14) Upon completion of your titrations, place all solutions into the appropriate waste container.

(15) Rinse t

he buret at least twice with tap water and once with distilled water (including the tip)

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