To prepare 0.1 M sodium acetate, you will need to weigh out the appropriate amount of sodium acetate trihydrate or anhydrous sodium acetate based on the molarity you desire. Dissolve this in a specific volume of water, typically in a volumetric flask, and then make up the final volume to the desired concentration. Stir well to ensure complete dissolution.
The following table is extracted from the Internet:* For pH=3: mix 982,3 mL 0,1 M acetic acid with 17,7 mL 0,1 M sodium acetate* For pH=4: mix 847,0 mL 0,1 M acetic acid with 153 mL 0,1 M sodium acetate* For pH=5: mix 357 mL 0,1 M acetic acid with 643 mL 0,1 M sodium acetate* For pH=3: mix 52,2 mL 0,1 M acetic acid with 947,8 mL 0,1 M sodium acetate
To prepare a 1.25 M solution of sodium citrate, dissolve 294.1 grams of sodium citrate dihydrate powder in 1 liter of water. Mix well until the powder is completely dissolved. Adjust the volume if necessary to reach exactly 1 liter.
To prepare 0.01 M sodium phosphate solution, dissolve the calculated amount of sodium phosphate dibasic (Na2HPO4) in distilled water. Use a balance to measure the required mass based on the molecular weight of Na2HPO4 and make up the volume to the desired concentration of 0.01 M. Always wear appropriate safety gear and handle chemicals carefully.
Theoretically: dissolve 571,59 g of zinc uranyl acetate in 1 L water. But zinc uranyl acetate is not so soluble. I recommend a concentration of max. o,1 M (57,159 g of zinc uranyl acetate in 1 L water).
To prepare a 0.01 M sodium borate buffer, dissolve the appropriate amount of sodium borate (Na2B4O7) in water to make a 0.01 M solution. Adjust the pH to your desired range by adding a strong acid (such as hydrochloric acid) or a strong base (such as sodium hydroxide). Ensure the final volume of the solution is accurate by adding or diluting with water as needed.
To prepare a 0.38 M sodium acetate solution, you would need to dissolve the appropriate amount of sodium acetate trihydrate (CH₃COONa·3H₂O) in water. For example, to make 100 mL of a 0.38 M solution, you would dissolve 2.96 grams of sodium acetate trihydrate in sufficient water to make 100 mL. Ensure complete dissolution before use.
The following table is extracted from the Internet:* For pH=3: mix 982,3 mL 0,1 M acetic acid with 17,7 mL 0,1 M sodium acetate* For pH=4: mix 847,0 mL 0,1 M acetic acid with 153 mL 0,1 M sodium acetate* For pH=5: mix 357 mL 0,1 M acetic acid with 643 mL 0,1 M sodium acetate* For pH=3: mix 52,2 mL 0,1 M acetic acid with 947,8 mL 0,1 M sodium acetate
To prepare the buffer using solid form reagents, prepare a 0.1 M ammonium acetate solution by dissolving 7.7 g ammonium acetate in a 1000 ml water. Adjust 1 L of this solution to pH 4.5 by adding acetic acid (about 8 ml) and 5 ml of 1 M p-TSA (equivalent to 5 mM p-TSA).
This is a neutralization reaction; sodium acetate is obtained.
The answer is 0,1648 g NaCl.
To prepare a 1.25 M solution of sodium citrate, dissolve 294.1 grams of sodium citrate dihydrate powder in 1 liter of water. Mix well until the powder is completely dissolved. Adjust the volume if necessary to reach exactly 1 liter.
To dilute 3 M sodium acetate to 150 mM sodium acetate requires a volume of water (more exactly, of final solution, but for this problem any possible volume change on dilution will be ignored) equal to 3/0.150 = 20 times the volume of the original 3 M solution. Call the unknown volume of the 3 M solution v; then v + 20v = 500 or v = 500/21 or 23.8 microliters of 3 M solution, to the justified number of significant digits, and therefore 500 - 23.8 = 476.2 microliters. (The last digit is depressed because it may not be significant; 500 has only three significant digits, and 3 M has only one, although it is probably intended to have more.)
To prepare 0.01 M sodium phosphate solution, dissolve the calculated amount of sodium phosphate dibasic (Na2HPO4) in distilled water. Use a balance to measure the required mass based on the molecular weight of Na2HPO4 and make up the volume to the desired concentration of 0.01 M. Always wear appropriate safety gear and handle chemicals carefully.
Prepare 200 ml of 0.1 N / 0.1 M Ethyl Acetate1.96 ml pure ethyl acetate (M.W. 88.1, Sp. Gr. 0.9005 g/ml at 20°C) and make it up to 200 ml volume with distilled water.Your solution will be ready....
Theoretically: dissolve 571,59 g of zinc uranyl acetate in 1 L water. But zinc uranyl acetate is not so soluble. I recommend a concentration of max. o,1 M (57,159 g of zinc uranyl acetate in 1 L water).
Dissolve 1,42 g of anhydrous, for analysis sodium sulfate in 1 L demineralized water at 20 oC, in a volumetric flask.
To prepare a 0.01 M sodium borate buffer, dissolve the appropriate amount of sodium borate (Na2B4O7) in water to make a 0.01 M solution. Adjust the pH to your desired range by adding a strong acid (such as hydrochloric acid) or a strong base (such as sodium hydroxide). Ensure the final volume of the solution is accurate by adding or diluting with water as needed.