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400K ताप पर किसी विलयन का परासरण दाब 0.0821 वायुमण्डल है। विलयन की सान्द्रता मोल/लीटर में ज्ञात कीजिए।

(R = 0.0821 L atm K-1 mol-1

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π = CRT 

C = \(\frac{\pi}{RT}\)

π = परासरण दाब, 

T = ताप (K)

C = \(\frac{0.0821}{0.0821\ L\ atmK^{-1}mol^{-1} \times 400K }\)

= 2.5 x 10-3 mol/L

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