Method of preparing one mole of potassium acetate
To make one mole of potassium acetate solution, first prepare the required things. Potassium acetate is the main medicine, and the purity must be selected to ensure the quality of the product. Measuring devices are also indispensable, such as balances, used to accurately weigh the amount of potassium acetate; volumetric bottles, specifications depend on the amount of solution required, commonly used are 500 ml, 1000 ml, etc., need to be clean and accurate scale.

When measuring solvent water, distilled water or deionized water should be used, because there are few impurities, which can prevent impurities from reacting with potassium acetate. To accurately weigh an appropriate amount of potassium acetate with a balance, according to stoichiometry, the mass of one mole of potassium acetate is (molar mass value of potassium acetate) grams. When weighing, place the balance in a stable place. After adjusting to zero, weigh the paper on the tray pad and slowly add the medicine until the balance shows the desired value.

Place the weighed potassium acetate in a clean beaker, add an appropriate amount of water first, and gently stir it with a glass rod to help it dissolve. This process requires patience and should not be rushed to prevent the local concentration from being too high and affecting the dissolution rate. When the potassium acetate is mostly dissolved and the solution is slightly clarified, drain the solution in the beaker along the glass rod and slowly inject it into the selected volumetric flask. Note that the lower end of the glass rod is against the inner wall below the scale line of the volumetric flask, and the beaker mouth is in close contact with the glass rod to avoid the solution spilling out.

Rinse the beaker and glass rod with a small amount of water two to three times, and the lotion is also injected into the volumetric bottle to ensure that the potassium acetate is completely transferred. After that, add water to the volumetric bottle to one to two centimeters away from the scale line, and use the rubber head dropper to add water dropwise until the concave liquid level of the solution is tangent to the scale line. During bandwidth evaluation, the line of sight should be flush with the scale line and the lowest point of the concave liquid level of the solution, otherwise the solution concentration will be deviated.

After the bandwidth evaluation is completed, cover the volumetric bottle cork, hold the cork with the index finger, and hold the bottom of the bottle with the other hand. Repeatedly turn the volumetric bottle upside down and shake the solution well to make the concentration Therefore, a molar of potassium acetate solution has been prepared and can be used for various chemical experiments or other purposes as required.