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Question 30 (1 point) Which of the following aqueous solutions will have the lowest freezing point?...
12. Which of the following aqueous solutions would give the lowest freezing point? You must justify your answer. (Assume ideal behavior for the solutions.) a) 0.10 m Na2SO4 b) 0.20 m KF c) 0.20 m ethanol (C2H5OH) d) 0.10 m KNO3
QUESTION 15 Which of the following aqueous solutions will have the LOWEST vapor pressure? , 0.20 m C6H12O6 O 0.20 m NaCl O 0.10 m CaCl2 ○ 0.40 m C2H3OH 0 0.20 in Na2SO4
The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is testosterone . If 14.32 grams of testosterone, C19H28O2 (288.4 g/mol), are dissolved in 214.0 grams of benzene ... The molality of the solution is ____ m. The freezing point of the solution is ____ °C.
The freezing point of benzene C6H6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is testosterone . How many grams of testosterone, C19H28O2 (288.4 g/mol), must be dissolved in 243.0 grams of benzene to reduce the freezing point by 0.500°C ? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether...
Which aqueous solution will have the lowest freezing point? (a) 0.050 m CaCl2 (b) 0.15 m NaCl (c) 0.10 m HCl (d) 0.050 m CH3COOH (e) 0.20 m C12H22O11
4 pts Question 8 Choose the aqueous solution that has the lowest boiling point. These are all solutions of nonvolatile. A) 0.20 m NaNO2 B) 0.20 m K2PO4 C) 0.20 m C6H1206 D) 0.20 m KAl(SO4)2 ОА ОВ Ос OD 4 pts Question 9
1. The boiling point of ethanol, CH3CH2OH, is 78.500 °C at 1 atmosphere. Kb(ethanol) = 1.22 °C/m In a laboratory experiment, students synthesized a new compound and found that when 11.40 grams of the compound were dissolved in278.0 grams of ethanol, the solution began to boil at 78.673 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? ____ g/mol 2. Match the following aqueous solutions with...
Arrange the following aqueous solutions in order of increasing boiling point temperature (lowest to highest temperature, with 1 being the lowest and 4 being the highest): 0.20 m glucose, 0.30 m BaCl2, 0.40 m NaCl, 0.50 m Na2SO4. 0.20 m glucose [ Choose ] 2 3 1 4 0.30 m BaCl2 [ Choose ] 2 3 ...
Match the following aqueous solutions with the appropriate letter from the column on the right. 1. 0.16 m NiBr2 A. Lowest freezing point 2. 0.15 m Mg(NO3)2 B. Second lowest freezing point 3. 0.20 m MnSO4 C. Third lowest freezing point 4. 0.42 m Sucrose(nonelectrolyte) D. Highest freezing point 2.The boiling point of diethyl ether, CH3CH2OCH2CH3, is 34.500 °C at 1 atmosphere. Kb(diethyl ether) = 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when...
Match the following aqueous solutions with the appropriate letter from the column on the right. I. 0.14 m Ni(CH3COO)2 A. Lowest freezing point 2. 0.13 m Cr(CHjCOO2 B. Second lowest freezing point 3. 0.15 m Ni(CH,COO)2 C. Third lowest freezing point D. Highest freezing point 4. 0.48 m Sucrose(nonelectrolyte) Submit Answer Retry Entire Group 9 more group attempts remaining Match the following aqueous solutions with the appropriate letter from the column on the right. I. 0.14 m Ni(CH3COO)2 A. Lowest...