ed in a clean container until the temperature of the solution is 208C WRAt type
ID: 575955 • Letter: E
Question
ed in a clean container until the temperature of the solution is 208C WRAt type solution exists at 20°C? If so me of this solution precipitates-how much K2Cr20, is precipitated? saturated solution; 25 g precipitates )upersaturated solution; 47 g precipitates supersaturated solution; 56 g precipitates 2 (d) saturated solution: 33 g precipitates (e) supersaturated solution:; 33 g precipitates 11. Does carbon tetrachloride, CCla, dissolve in heptane, CH16? (a) No, CCl4 is insoluble in heptane (b) Yes, CCla, is partly soluble in heptane c) Yes, CCl, is soluble in heptane 2 12 Freon, cFC13, is a cooling age 137 used in many air conditioners. A quantity, 768 g of CFC13 (MMs .4 g/mol; mp =-1 10.5 C; bp 23.8 C) is cooled from 43.8°C to 5.0 C How much heat is released 5 J/(g*oC), s-:0.538 J/(g*oC)AHvap = 25.1 kJ/mol in this process?s@ = 0.88 a)-16.9 kb) 16.9 k 4319 k] d)+4.319 k] )5.574 kj Q12A, B, C, D & E: See Essay Boxes for these questions.
Explanation / Answer
Ans 11 : C) Yes, CCl4 is soluble in heptane
As a general rule "like dissolves like" , so all polar compounds dissolve in polar solvents and non polar compounds in non polar solvents.
The CCl4 is a non polar compound , so it is not soluble in polar compounds , but dissolves in non polar solvent heptane.
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