JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
In the given TLC, the distance of spot A & B are \(5 cm \& 7 cm\), from the bottom of TLC plate, respectively.
\(R _{ f }\) value of B is \(x \times 10^{-1}\) times more than A . The value of \(x\) is _______.
- A 15
- B 20
- C 25
- D 30
Answer & Solution
Correct Answer
(A) 15
Step-by-step Solution
Detailed explanation
\begin{array}{l}R_{f_A}=\frac{\text { distance traveled by substance from base line }}{\text { distance traveled by Solvent from base line }} \\ R_{f_A}=\frac{4}{8} R_{f_B}=\frac{6}{8} \\ \frac{R_{f_B}}{R_{f_A}}=\frac{6}{8} \times \frac{8}{4} \\ R_{f_B}=1.5 \times R_{f_A} \\ x…
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