You want to raise the boiling point of 1.00 L of water by 2.70
°C by adding some sodium
chloride. How much sodium chloride would you need to add to achieve
such an increase in
boiling point? [Kb(H2O) = 0.710 °C/m)]
a) 1.90 g
b) 22.4 g
c) 111 g
d) 222 g
e) 4227 g
Answer is c) - can you explain this? I found d) again and again....
You want to raise the boiling point of 1.00 L of water by 2.70 °C by...
The boiling point of water is 100.0°C at 1 atmosphere. How many grams of zinc chloride (136.3 g/mol), must be dissolved in 209.0 grams of water to raise the boiling point by 0.400°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 CH3CH2OCH2CH3 2.02 g zinc chloride.
The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.54 grams of chromium(II) acetate, Cr(CH3COO)2 (170.1 g/mol), in 158.2 grams of water. Use the table of boiling and freezing point constants to answer the questions below. 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 CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C....
two Part question A: The boiling point of water is 100.0°C at 1 atmosphere. How many grams of chromium(II) bromide (211.8 g/mol), must be dissolved in 287.0 grams of water to raise the boiling point by 0.400°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 CH3CH2OCH2CH3 2.02 g chromium(II) bromide. ____ ? B...
Will leave a thumbs up!! A) The boiling point of water is 100.0°C at 1 atmosphere. How many grams of potassium nitrate (101.1 g/mol), must be dissolved in 268.0 grams of water to raise the boiling 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 CH3CH2OCH2CH3 2.02 _____g potassium nitrate. B)...
The boiling point of water is 100.0°C at 1 atmosphere. How many grams of aluminum nitrate (213.0 g/mol), must be dissolved in 279.0 grams of water to raise the boiling point by 0.450°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 CH3CH2OCH2CH3 2.02
The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 12.31 grams of cobalt(II) acetate, Co(CH3COO)2 (177.0 g/mol), in 287.1 grams of water. Use the table of boiling and freezing point constants to answer the questions below. 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 CH3CH2OCH2CH3 2.02 The molality of the solution is _____m. The boiling point of the solution is °____C....
The boiling point of water is 100.0°C at 1 atmosphere. (Kb(water) = 0.512°C/m) How many grams of calcium iodide (293.9 g/mol), must be dissolved in 280.0 grams of water to raise the boiling point by 0.300°C ? g calcium iodide.
The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 13.51 grams of sodium sulfate, Na2SO4 (142.1 g/mol), in 262.4 grams of water. Use the table of boiling and freezing point constants to answer the questions below. 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 CH3CH2OCH2CH3 2.02 The molality of the solution is _______ m. The boiling point of the solution...
The boiling point of water is 100.0°C at 1 atmosphere. How many grams of iron(II) iodide (309.7 g/mol), must be dissolved in 258.0 grams of water to raise the boiling point by 0.300°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 CH3CH2OCH2CH3 2.02 ___?___ g iron(II) iodide.
The boiling point elevation constant for benzene, Kb, is 2.61 °C/m. The boiling point of pure benzene is 80.2 °C. A solution of 30.0 g of urea (CO(NH2)2, 60.06 g/mol) in 1.00 kg of methanol will raise the boiling point of benzene to a. 85.4 °C b. 80.4 °C c. 81.5 °C d. 82.8 °C e. 78.9 °C