A solution is prepared by dissolving 2.00 g of glycerin (C3H8O3) in 201 g of ethanol...
A solution is prepared by dissolving 2.00 g of glycerin (C3H8O3) in 201 g of ethanol (C2H5OH). The freezing point of the solution is _______ degrees celsius. The freezing point of pure ethanol is -114.6 degrees celsius at 1atm. The molal-freezing point depression constant (Kf) for ethanol is 1.99 degrees celsius/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively.
Homework Answers
Add Answer to:
A solution is prepared by dissolving 2.00 g of glycerin (C3H8O3)
in 201 g of ethanol...
2. A solution is prepared by dissolving 7.00 g of glycerin (C3H8O3) in 201 g of...
2. A solution is prepared by dissolving 7.00 g of glycerin (C3H8O3) in 201 g of ethanol (C2H5OH). The freezing point of the solution is __________°C. The freezing point of pure ethanol is -114.6 °C at 1 atm. The molal-freezing-point-depression constant (Kf) for ethanol is 1.88 °C/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively.
A solution is prepared by dissolving 5.00 g of glycerin () in 201 g of ethanol The...
A solution is prepared by dissolving 5.00 g of glycerin () in 201 g of ethanol The freezing point of the solution is ________°C. The freezing point of pure ethanol is -114.6 °C at 1 atm. The molal-freezing-point-depression constant () for ethanol is 1.99 °C/m. The molar masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol, respectively. -115.1 -119.4 0.537 -109.8 -114.1
9. 65) A soltion is prepared by dissolving 7.00 g of gycerin (C3Hg03) in 201 g...
9. 65) A soltion is prepared by dissolving 7.00 g of gycerin (C3Hg03) in 201 g of ethanol (C2HsOH). The freezing point of the solution isoC freezing-point-depression constant (Kp for ethanol is 1.99°C/m. The molar °C. The feezing point of pure ethanol is -114.6°C at 1 atm. The molal- masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol respectively.
Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3, molar mass = 92.09 g/m...
Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3, molar mass = 92.09 g/mol) in 376 mL of water. Some possibly useful constants for water are Kf = 1.86°C/m and Kb = 0.512°C/m. A) -3.33°C B) 0.887°C C) -1.65°C D) 3.33°C E) 0.654°C
Benzaldehyde ( MM = 106.18 g/mol) also known as oil of almonds is used in the...
Benzaldehyde ( MM = 106.18 g/mol) also known as oil of almonds is used in the manufracture of dyes and perfume and in flavorings. what would be the freezing point of a solution prepared by dissolving 106.345 g of benzaldehyde in 1.687 kg of ethanol? kf=1.99, freezing point of pure ethanol = -117.3 degree Celsius a) moles of benzaldehyde b) kg of ethanol c) molality d) freezing point depression : delta Tf= kf×m e) freezing point of the solution
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of in 115 g of water? [Use these Molar Mass...
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of in 115 g of water? [Use these Molar Masses: Ca = 40, N = 14, O = 16. Also, the molal freezing point depression constant for water is 1.86 °C/m.]
1.0345 g of palmitic acid dissolved in 8.7545 g of stearic acid. Calculate the freezing point...
1.0345 g of palmitic acid dissolved in 8.7545 g of stearic acid. Calculate the freezing point of the solution. The molar mass of palmitic acid is 256.48 g/ mol. The molal freezing point constant , Kf for stearic acid is 4.5 degrees C/ m and pure stearic acid freezes at 69.3 degrees Celsius.
Given the following information. Determine the freezing points of a solution which contains 76.5 g of a sodium carbonate (Na2CO3) in 500.0 g of ethanol (C2H6O). Kf for ethanol ...
Given the following information. Determine the freezing points of a solution which contains 76.5 g of a sodium carbonate (Na2CO3) in 500.0 g of ethanol (C2H6O). Kf for ethanol 1.99 °C / m Normal freezing point for ethanol -114.6 °C
A solution was made by adding 800 g of ethanol, C2H5OH, to 8 x 103 g...
A solution was made by adding 800 g of ethanol, C2H5OH, to 8 x 103 g of water. How much would this lower the freezing point? Kf of H2O is 1.86 degrees Celsius/m The answer is supposed to be 4.1 degrees Celsius, but I got 3.98287 degrees Celsius. What did I do wrong?
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass...
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass = 46.08 g/mol) in 42.2 g water. What is the molality (mol/kg) of C2H5OH in the solution? 4361 m 4.36 m 0.767 m 18.2 m 0.0182 m Question 2 5 pts Which observation correctly reflects colligative property? A KOH solution has a high vapor pressure than pure water Adding NaCl to ice will increase its melting point. A 0.5 m NaOH solution boils at...
9. 65) A soltion is prepared by dissolving 7.00 g of gycerin (C3Hg03) in 201 g of ethanol (C2HsOH). The freezing point of the solution isoC freezing-point-depression constant (Kp for ethanol is 1.99°C/m. The molar °C. The feezing point of pure ethanol is -114.6°C at 1 atm. The molal- masses of glycerin and of ethanol are 92.1 g/mol and 46.1 g/mol respectively.
Question 1 5 pts A solution is prepared by dissolving 35.35 g ethanol (C2H5OH; Molar mass = 46.08 g/mol) in 42.2 g water. What is the molality (mol/kg) of C2H5OH in the solution? 4361 m 4.36 m 0.767 m 18.2 m 0.0182 m Question 2 5 pts Which observation correctly reflects colligative property? A KOH solution has a high vapor pressure than pure water Adding NaCl to ice will increase its melting point. A 0.5 m NaOH solution boils at...
Most questions answered within 3 hours.
-
Question 1 (1 point)
What's measured in mass spectrometry?
Frequency
Atomic number
Mass
Molecular weight
Question...
asked 5 minutes ago -
Jupiter Satellite
Corporation earned $19.8 million for the fiscal year ending
yesterday. The firm also paid...
asked 10 minutes ago -
Your pizza restaurant uses the finest food ingredients to make
authentic brick-oven pizzas, and your mozarella...
asked 3 minutes ago -
How does social media affect and reflect on today’s culture?
asked 6 minutes ago -
Value-Stream Costing Objective
During the week of June 12, Harrison Manufacturing produced and
shipped 18,200 units...
asked 8 minutes ago -
The following chemical reaction occurs in a
basic solution.
Mg2+(aq) +
MnO2(aq) + OH−(aq) →
Mg(s)...
asked 20 minutes ago -
Visitor from Con Ed from a galaxy far away have placed a large
(black) ring of...
asked 25 minutes ago -
You are the CFO of Crane, Inc., a retailer of the exercise
machine Slimbody6 and related...
asked 21 minutes ago -
Since IoTs are difficult, or just about impossible, depending on
installed location, to secure, what does...
asked 29 minutes ago -
PTC is a substance that has a strong bitter tatse for some
people and is tasteless...
asked 42 minutes ago -
What is the output of the following program segment? (15) vector
vec = {'A', 't', 'B',...
asked 35 minutes ago -
Think about a firm that you may like buying products from. What
industry does this firm...
asked 38 minutes ago