The question i need help with is the bottom picture, the sapling question. but i

Question

The question i need help with is the bottom picture, the sapling question. but i provided a picture of page 6 on my lab manual on top to help. thank you!!!!!!

Reaction of Crystal Violet with NaoH: A Kinetic Study In the Data Collection pop-up window, select the Collection tab, and change the Mode to "Time Based" and the length to 20 minutes. The "Sample at Time Zero" box should be checked, and you should see the phrase "Triggering is disabled" to the right. Finally, change the Sampling Rate to 2 samples/minute; this should change the minutessample to 0.5. Double-check that the Samples to be Collected listed below reads 41 The cuvette will serve as the sample holder for the colorimeter measurements. Look closely atthe cuvette and note that the are only two clear faces. The cuvette must be aligned in the colorimeter so that the beam of light passes through the clear faces. This is done by lining up one of the clear sides of the cuvette with the arrow at the top of the cuvette slot in the colorimeter. Before beginning data collection, you must calibrate the colorimeter with a sample of DI H20 has and zero absorbance, since it is colorlcss. Fill the cuvette about three-fourths full with DI o, making sure there are no bubbles, wipe the clear outside you can a Kim Wipe nsert the cuvette into the note the position of the cuvette so the Cal insert it in the same orientation each time, and close the door. Press and hold button. in the center ofthe colorimeter until the red light begins to flash, and then release the The light will stop flashing when the calibration is finished. Data Collection Part 1: I. the cuvette and dry it thoroughly inside and out with a Kimwipe. Using the buret provided, dispense 9.00 mL of 1.5 x 105 M crystal violet solution into a clean, dry 50 mL Using a calibrated plastic syringe, add 1.0 ml of0.050 M NaoH to the CV as rapidly as possible without splashing. At the same instant of NaoH addition, click the green Collect icon from the toolbar to start the reaction timer. Carry out all of the following as quickly as possible, so that you begin collecting data as the reaction start as possible. Thoroughly mix the CV/NaoH solution by swirling the beaker. Fill the cuvette full with the solution. Position the cuvette in the colorimeter in exactly the same manner as was used for calibration, and close the lid. Note that the computer begins collecting data as soon as the Collect icon is clicked, so you will have to discard the data point(s) collected before the cuvette is in place. Do not disturb the colorimeter during the measurement. Data collection will stop automatically after 20 minutes Part 1: Data Analysis First, you must discard the data point(s) collected before the cuvette was in place. Click the row number(s) you wish to discard, which will highlight the row(s) in gray, and select Edit Strike Through Data Cells. A line will be put through the selected row(s), and the data will not be included in the following data analysis. Do not try to delete the row(s lt for each data point using the solution absorbance values, At, and Beer's law 2 calculate tion Data, New Calculated Column. Name the column ICv+] and enter the appropriate equation. When entering a column as a variable in an equation, it can be ted under "Variables (Columns)" or the column name must be entered in quotes (i e Absorbance". Under the Options tab, choose 3 significant figures 3 In a ond New Calculated Column, calculate 1/ICV lt values, being sure to name the column and select 3 significant figures Revised 8/10/2015 WW Chemistry Department

Explanation / Answer

Ans:- a) Here V1 = 50ml

C2 =2.5x10-5M

V2 =50ml

C1 = initial concentration

Now

C1V1 = C2V2

C1 = C2V2/V1

     = 2.5x10-5 x10 /50

     = 0.0005x102 M

Ansb) No before the solution are mixed none of the sample of had a chance to react as the reaction will not begin before mixing.

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