Extracting citric acid from a mixture of different acids can be challenging, but it is possible using selective extraction techniques. Here's a general procedure to extract citric acid from the given mixture:

Prepare the Mixture: Ensure that the mixture is well-mixed and homogenous. If necessary, adjust the pH of the solution to a suitable range for citric acid extraction using sodium hydroxide (NaOH) or hydrochloric acid (HCl).

Selective Extraction: Citric acid is a weak organic acid, so it can be selectively extracted using an organic solvent that is immiscible with water. One common choice is ethyl acetate. Add an appropriate volume of ethyl acetate to the mixture and vigorously shake or stir it for a few minutes.

Phase Separation: Allow the mixture to settle so that two distinct layers form - an upper organic layer (containing citric acid and ethyl acetate) and a lower aqueous layer (containing the remaining acids and water). This separation occurs due to the difference in density between the two layers.

Separation of Organic Layer: Carefully transfer the upper organic layer (containing citric acid) to a separate container using a separating funnel or pipette. Be cautious not to transfer any of the aqueous layer.

Citric Acid Recovery: To recover citric acid from the organic layer, you can perform solvent evaporation or other suitable techniques to remove the ethyl acetate. This may involve using a rotary evaporator, heating, or allowing it to evaporate naturally, depending on the quantity and desired purity of the citric acid.

Purification: If desired, you can further purify the recovered citric acid by dissolving it in a minimal amount of distilled water and performing recrystallization. The process involves heating the solution to dissolve the citric acid and then allowing it to cool slowly, promoting crystal formation. The resulting citric acid crystals can be filtered or centrifuged, washed with cold water, and air-dried.

Remember, this is a general procedure, and the actual process may require some optimization based on the specific composition and quantities of the acids in the mixture. It's also essential to consider safety precautions and follow appropriate guidelines when handling acids and solvents.