किसी विलेय के (2,g) को (0.4,kg) विलायक में घोलने पर प्रभावी मोललता (0.10,m) मिली। यदि (i=0.5), तो वास्तविक मोलर द्रव्यमान क्या होगा?
When (2,g) solute is dissolved in (0.4,kg) solvent, effective molality is found to be (0.10,m). If (i=0.5), what is the true molar mass?
Correct answer and explanation
B. \(25,g,mol^{-1}\)
Concept
वास्तविक मोललता \(\frac{0.10}{0.5}=0.20,m\) है। / True molality \(=\frac{0.10}{0.5}=0.20,m\).
Why this answer is correct
मोल \(0.20\times0.4=0.08\) होंगे। / Moles \(=0.20\times0.4=0.08\).
Exam Tip
मोलर द्रव्यमान \(=\frac{2}{0.08}=25,g,mol^{-1}\)। / Molar mass \(=\frac{2}{0.08}=25,g,mol^{-1}\).
Login to save your score, XP, coins and progress.
QR scan karne par isi question ka correct answer aur explanation khula hua milega.
Open answer link