JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties
The osmotic pressure of a dilute solution is \(7 \times 10^5 \mathrm{~Pa}\) at \(273 \mathrm{~K}\). Osmotic pressure of the same solution at \(283 \mathrm{~K}\) is _______ \(\times 10^4 \mathrm{Nm}^{-2}\).
- A \(36\)
- B \(73\)
- C \(45\)
- D \(15\)
Answer & Solution
Correct Answer
(B) \(73\)
Step-by-step Solution
Detailed explanation
\( \text { (72.56) or (73) } \) \( \pi=\text { CRT } \) \( \Rightarrow \frac{\pi_1}{\pi_2}=\frac{\mathrm{T}_1}{\mathrm{~T}_2} \) \( \Rightarrow \pi_2=\frac{\pi_1 \mathrm{~T}_2}{\mathrm{~T}_1}=\frac{7 \times 10^5 \times 283}{273} \) \( =72.56 \times 10^4 \mathrm{Nm}^{-2}\)
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