Method of making nickel acetate solution
To make a nickel acetate solution, you should prepare all kinds of things first. You need to take an appropriate amount of acetic acid, which is mild in nature, and an appropriate amount of nickel. Nickel is either nickel powder or nickel block, which is convenient to use.

If you use nickel block, you should first file it and grind it into a crushed shape to increase its contact surface with acetic acid, so that the reaction can proceed quickly.

Pour the prepared acetic acid into a clean container, and then slowly add nickel powder or nickel crushed powder. At this time, the solution is gradually changing, or there are tiny bubbles, which is a sign of the combination of nickel and acetic acid.

Then the reaction may be slightly slowed, and the container can be placed on a slight fire to warm it up to help it react. However, when it is warm, it must be stirred frequently to make it evenly heated, and not overheated, so as to avoid excessive volatilization of acetic acid.

When the nickel is gradually dissolved, the color of the solution gradually changes, or it is light green. At this time, nickel acetate gradually forms in the solution.

After the reaction is completed, take filter paper, place it on the funnel, pour the prepared solution on the filter paper, and filter out the undissolved impurities.

After these steps, a pure nickel acetate solution can be obtained for later use.