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 160mm (the distance travelled by the solvent) to cm because the distance travelled by the solute is given in cm. 1cm = 10mm, so 160mm = 16cm.
Step 2: Now, we can calculate the Rf value. The distance travelled by solute Y is 12cm and the distance travelled by the solvent front is 16cm.
Rf = Distance travelled by solute / Distance travelled by solvent Rf = 12cm / 16cm = 0.75
So, the Rf value of solute Y is 0.75 when rounded to two decimal places.
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