यदि \(K_b=0.52,K,kg,mol^{-1}\), विलेय (3,g), विलायक (250,g), मोलर द्रव्यमान \(60,g,mol^{-1}\), और (i=2) है, तो \(\Delta T_b\) कितना होगा?
If \(K_b=0.52,K,kg,mol^{-1}\), solute mass is (3,g), solvent mass is (250,g), molar mass is \(60,g,mol^{-1}\), and (i=2), what is \(\Delta T_b\)?
Explanation opens after your attempt
B. (0.208,K)
Concept
विलेय के मोल \(\frac{3}{60}=0.05\) हैं। / Moles of solute \(=\frac{3}{60}=0.05\).
Why this answer is correct
(250,g=0.25,kg), इसलिए मोललता (0.2,m) है। / (250,g=0.25,kg), so molality is (0.2,m).
Exam Tip
\(\Delta T_b=2\times0.52\times0.2=0.208,K\)। / \(\Delta T_b=2\times0.52\times0.2=0.208,K\).
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