एक विलयन में (3.0,g) विलेय (600,mL) में है। परासरण दाब (300,K) पर (0.615,atm) है। यदि (i=0.75), तो वास्तविक मोलर द्रव्यमान क्या होगा?
A solution contains (3.0,g) solute in (600,mL). Its osmotic pressure at (300,K) is (0.615,atm). If (i=0.75), what is the true molar mass?
Explanation opens after your attempt
B. \(150,g,mol^{-1}\)
Concept
\(C=\frac{0.615}{0.75\times0.082\times300}=0.0333,M\)। / \(C=\frac{0.615}{0.75\times0.082\times300}=0.0333,M\).
Why this answer is correct
(600,mL=0.6,L), इसलिए मोल \(0.0333\times0.6=0.02\) हैं। / (600,mL=0.6,L), so moles \(=0.0333\times0.6=0.02\).
Exam Tip
मोलर द्रव्यमान \(\frac{3.0}{0.02}=150,g,mol^{-1}\)। / Molar mass \(=\frac{3.0}{0.02}=150,g,mol^{-1}\).
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