which of the following acid is used in the electrolytic method for decalcification?

In the electrolytic method for decalcification, **formic acid** is commonly used. This method involves using an electrolytic cell where formic acid is utilized as the decalcifying agent to remove calcium deposits from tissues or samples.

Here’s a brief overview of the process:

1. **Electrolytic Cell Setup**: The sample, typically tissue, is placed in an electrolytic cell containing formic acid.

2. **Electrolysis Process**: An electric current is passed through the solution. The electrolytic reaction helps in breaking down calcium salts present in the tissue.

3. **Decalcification**: Formic acid, combined with the electric current, helps dissolve the calcium deposits from the tissue. This allows for further processing of the sample, such as embedding and sectioning for microscopic examination.

Formic acid is favored in this context due to its effectiveness and relatively mild nature compared to other acids used in decalcification processes.