Methods of separating and purifying substances

An environmental chemist uses thin-layer chromatography (TLC) to identify a pesticide residue, P-12, in a soil extract.

In the mobile phase used, pesticide P-12 has a retention factor ( $R_f$ ) value of 0.78.

Calculate the distance moved by the spot of pesticide P-12 if the solvent front has moved 12.4 cm from the baseline.

Give your answer to 1 decimal place.

[2]

Methods of separating and purifying substances Questions

An environmental chemist uses thin-layer chromatography (TLC) to identify a pesticide residue, P-12, in a soil extract.

In the mobile phase used, pesticide P-12 has a retention factor ( $R_f$ ) value of 0.78.

Calculate the distance moved by the spot of pesticide P-12 if the solvent front has moved 12.4 cm from the baseline.

Give your answer to 1 decimal place.

[2]