The method of preparing a molar acetic acid solution
To prepare a molar acetic acid solution, the first thing to do is to understand the reason. A molar solution contains one molar solution per liter of solution. Acetic acid, its chemical formula is $CH_3COOK $, and the molecular weight can be calculated. The atomic weight of carbon (C) is 12, the atomic weight of (H) is 1, the atomic weight of oxygen (O) is 16, and the atomic weight of (K) is 39. Molecular weight of acetic acid: 12 dollars\ times2 + 1\ times3 + 16\ times2 + 39 = 98 $. This is the amount of A molar acetic acid 98 grams.

To prepare, first take a suitable volumetric flask, such as a 1000 ml volumetric flask. Use the balance to refine 98 grams of acetic acid., the balance is placed on the flat surface, zero, the amount is placed on the balance, peel heavy, and then carefully add acetic acid and solid, until the balance shows 98 grams.

Take a cup, add a good amount of acetic acid into it, add a small amount of steam water, mix with a glass rod, to promote its dissolution. Note that this amount of water does not need to be added in order to make the solid completely soluble.

When the acetic acid is completely dissolved, pour the solution into the washed and dry 1000 ml volumetric flask along the glass rod. Note, wash the cup and glass rod with a small amount of steamed water 2-3 times, and the washing liquid is also injected into the volumetric flask to make the solution leak.

Add steamed water to the volumetric flask until it is close to the scale < 1-2 cm. This time, use a dropper to add water dropwise until the lowest scale of the concave surface of the solution is tangent. Clean the volumetric bottle stopper and pour the bottle. In this way, a solution of acetic acid is obtained.