जॉइन Examsbookउत्तर : 3. "804.32 g"
Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)5
प्र: Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)
- 1204.60 gfalse
- 2304.30 gfalse
- 3804.32 gtrue
- 4400.00 gfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
उत्तर : 3. "804.32 g"
व्याख्या :
Answer: C) 804.32 g Explanation: ∆Tf = kf.m for ethylene glycol in aq. solution ∆Tf = kf wmol.wt × 1000wt. of solvent6 = 1.86 x w x 100062 x 4000 => w = 800 g So, the weight of solute should be more than 800 g.
समान प्रश्न
Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.