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JEE Mains · Chemistry · STD 12 -1. Solution and colligative properties

\(12\, g\) અબાષ્પશીલ દ્રાવ્યને  \(108\, g\) પાણીમાં ઓગળતા બાષ્પદબાણનો સાપેક્ષ ધટાડો \(0.1\) થાય છે . તો દ્રાવ્યનુ આણ્વિય દળ જણાવો. 

  1. A \(80\)
  2. B \(60\)
  3. C \(20\)
  4. D \(40\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(20\)

Step-by-step Solution

Detailed explanation

\(\frac{{{P^o}\, - \,{P_s}}}{{{P^o}}}\, = \,\frac{n}{N}\, = \,\frac{w}{m}\, \times \,\frac{M}{W}\) \(0.1\, = \,\frac{{12}}{m}\, \times \,\frac{{18}}{{108}}\) \(m\, = \,\frac{{12\, \times \,18}}{{0.1\, \times \,108}}\, = \,20\)
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