यदि (0.3,g) विलेय (150,mL) विलयन में (300,K) पर (0.123,atm) परासरण दाब देता है और (i=1), तो मोलर द्रव्यमान क्या होगा?
If (0.3,g) solute in (150,mL) solution gives osmotic pressure (0.123,atm) at (300,K) and (i=1), what is the molar mass?
Explanation opens after your attempt
B. \(400,g,mol^{-1}\)
Concept
\(C=\frac{0.123}{0.082\times300}=0.005,M\)। / \(C=\frac{0.123}{0.082\times300}=0.005,M\).
Why this answer is correct
(150,mL=0.15,L), इसलिए मोल \(0.005\times0.15=0.00075\) हैं। / (150,mL=0.15,L), so moles \(=0.005\times0.15=0.00075\).
Exam Tip
मोलर द्रव्यमान \(=\frac{0.3}{0.00075}=400,g,mol^{-1}\)। / Molar mass \(=\frac{0.3}{0.00075}=400,g,mol^{-1}\).
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