15.Solute Y has travelled 12cm and the solvent front has travelled 160mm. Calculate the Rf value of solute Y? Calculate to 2 decimal places.
Question
15. Solute Y has travelled 12cm and the solvent front has travelled 160mm. Calculate the Rf value of solute Y? Calculate to 2 decimal places.
Solution
The Rf value (Retention factor) is calculated by dividing the distance travelled by the solute by the distance travelled by the solvent.
Step 1: Convert all measurements to the same units. Here, we can convert cm to mm because 1 cm = 10 mm. So, 12 cm = 120 mm.
Step 2: Now, we can calculate the Rf value. The distance travelled by solute Y is 120 mm and the distance travelled by the solvent front is 160 mm.
Rf = Distance travelled by solute / Distance travelled by solvent Rf = 120 mm / 160 mm = 0.75
So, the Rf value of solute Y is 0.75 when rounded to two decimal places.
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