Question

In: Chemistry

how to prepare 10.0ml solutions 2ppm adding 50% v/v of the TISAB?

how to prepare 10.0ml solutions 2ppm adding 50% v/v of the TISAB?

Solutions

Expert Solution

For a liquid-liquid mixture, we defined 1 ppm concentration as 1 µL/L; therefore, 2 ppm = 2 µL/L.

The stock solution of TISAB has a concentration of 50% (v/v), i.e, 50 mL TISAB/100 mL water. Express the concentration in ppm as [(50 mL)*(1000 µL/1 mL)/(100 mL)*(1 L/1000 mL)] = (50000 µL/0.1 L) = 500,000 µL/L = 500,000 ppm.

The dilution needed is (500000 µL/L)/(2 µL/L) = 250,000.

It is difficult to prepare a 2 ppm solution directly from 50% (v/v) solution. We will need to use step-wise dilution.

Prepare the following table.

Initial concentration of TISAB (ppm)

Final concentration of TISAB (ppm)

Volume of stock (initial concentration) of TISAB required (mL)

Final volume of solution (final concentration) (mL)

500,000

100,000

10.00

50.00

100,000

10,000

5.00

50.00

10,000

1,000

5.00

50.00

1,000

100

5.00

50.00

100

10

5.00

50.00

10

2

2.00

10.00

We have used the dilution equation, M1*V1 = M2*V2 to get the volumes of the stock solutions required. We equate M1 = initial concentration of TISAB (ppm), M2 = final concentration of TISAB (ppm) and V2 = final volume of the dilute solution.


Related Solutions

explain how to prepare sample solutions and capillary applicators
explain how to prepare sample solutions and capillary applicators
Solve the following dissolution exercises: A. 3 aqueous solutions are mixed: 50 mL of 10% w/v...
Solve the following dissolution exercises: A. 3 aqueous solutions are mixed: 50 mL of 10% w/v HCl, 35 mL of 3.2% w/v NaCl and 65 mL of 13% w/v KCl, which is the final concentration of the solution in %p/v with respect to H +, Na +, K +, Cl- B. What volumes of 8M, 5M and 3M HCl should be mixed to prepare 1 L of 6M HCl C. It is necessary to prepare 35 mL of 15% w/v...
Show how you will prepare 100 ml of each of the solutions you will use for...
Show how you will prepare 100 ml of each of the solutions you will use for the solubility tests; (i) 6M NaOH, 6M HCl and 10% NaHCO3.
1. Describe the different methods of adding a new supplier in Sage 50. 2. How do...
1. Describe the different methods of adding a new supplier in Sage 50. 2. How do you make corrections to a sales invoice after posting? What do you enter? What does Sage 50 do?
How may grams of solute are needed to prepare the following solutions? 1.000L of 240.0M NaCl...
How may grams of solute are needed to prepare the following solutions? 1.000L of 240.0M NaCl 250.0 mL of 0.135 M CuSO4 500.0 mL of 0.370 M CH3OH Also, please tell how you got answers so I can know how to get calculations myself. THANK YOU :-)
Write an essay of the required length explaining how to prepare exactly 50 mL of an...
Write an essay of the required length explaining how to prepare exactly 50 mL of an aqueous solution of NaCl that has a concentration of 12.0 ppm and an inherent error (precision) of 1% or less. Include in your essay the reasons for your choice of sample size and equipment at each step. I just need to know the procedure on how to prepare the solution.. I asked earlier and they gave me 0.6mg which gives me 12ppm but it...
A hot plate with a temperature of 60 ° C will be cooled by adding 50...
A hot plate with a temperature of 60 ° C will be cooled by adding 50 triangular profile needle blades k = 209 W / mK with a length of 59 mm and 10 mm. The ambient temperature is 20 C and the heat transfer coefficient on the surface is 20 W / m2K according to the situation; a-) Wing efficiency, b-) Total heat transfer rate (W) from the wings, c-) Calculate the effectiveness of a wing.
Approximately how much water should be added to 10.0mL of 11.1M HCl so that it has...
Approximately how much water should be added to 10.0mL of 11.1M HCl so that it has the same pH as 0.90M acetic acid (Ka=1.8 × 10-5)? a) 28mL b) 276mL c) 3L d) 28 L e) 276 L
How would you prepare the following solutions? Unless stated otherwise, assume that the solvent is purified...
How would you prepare the following solutions? Unless stated otherwise, assume that the solvent is purified water and that you will dissolve the solute in a lesser amount of solvent and then “bring the solution to volume”. Show your math and use proper units. CuSO4 FW 159.61 NaCl FW 58.44 CaCl FW 111.0 Na2SO4. 10H2O FW 322.04 11. 250 ml 1 mM CuSO4 12. 500 ml 0.25M NaCl 13. 100 ml 20mM CaCl 14. 10 ml 1 M Na2SO4 15....
1. How would you prepare 100 mL of F- solutions with the following concentrations: (A) 10.0...
1. How would you prepare 100 mL of F- solutions with the following concentrations: (A) 10.0 ppm, (B) 5.00 ppm, (C) 0.500 ppm and (D) 0.100 ppm. What is this experimental protocol called? (10 pts)
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT