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What is the critical temperature of compound X?
Visualize a substance with the following points on the phase diagram: a triple point at 0.05 atm and
150 K; a normal melting point at 175 K; a normal boiling point at 350 K; and a critical point at 2.0 atm
and 450 K. The solid liquid line is “normal” (meaning positive sloping). For this, complete the following:
Briefly explain the physical and chemical methods of determining the molecular weight or molar mass of high molecular compounds, with examples
If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?
What is the molar concentration of Aki's disinfectant if she dissolved 5Tbsp. of NaCIO (sodium hypochlorite) in 3.8 liters of H2O (water)?
Read the questions carefully. Based on what you have learned, solve the following word problems about colligative
properties.
1. Predict the boiling point of the 1.25 m sucrose solution. Sucrose is a non-volatile, nonionized solute.
2. When 15.0 g of ethyl alcohol, C2H5OH is dissolved in 750. G of formic acid, the freezing point of the solution is
7.20°C. The freezing point of pure formic acid is 8.40°C. Evaluate Kf for formic acid.
- The reaction of peroxydisulfate ion (S2O2-8) with iodine ion (I-) is
S2O82-(aq)+3I-(aq)2SO42-(aq)+I3-(aq)
Answer the following question based on your observations.
1. How will you describe the solubility of pure liquid materials on your set up 1 as represented by water as solvent and alcohol as solute?
2. Is there a strong force of interaction between the pure liquids? Why?
3. When you add a small amount of solute into a solvent in your set-up 2, what happen?
4. Will it have the same result uf you are going to use greater amount of salt? why?
5. How will you describe the forces of attraction between solid solute and liquid solvent?
6. How will you differentiate the results of set- up 3 and set-up 4?
7. Is there a difference in forces of interaction?
Calculate the volume in liters of a 4.86x 10 4 m M copper(II) fluoride solution that contains 25.0g of copper(II) fluoride CuF2
. Round your answer to 3
significant digits.
what is the percent concentration of sucrose in a solution made by dissolving 5.4g of sucrose in enough water to give 87.3 of solution?
