Search
What are homologous series
- The reaction of peroxydisulfate ion (S2O2-8) with iodine ion (I-) is
S2O82-(aq) + 3I-(aq) = 2SO42-(aq) + I3-(aq)
From the following data collected at a certain temperature, determine the rate law and calculate the rate constant.
Experiment [S2O82-](M) [I-](M) Initial Rate (M/s)
1 0.080 0.034 2.2 x 10-4
2 0.080 0.017 1.1 x 10-4
3 0.16 0.017 2.2 x 10-4
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.
An aliquot of 10 mL from a 12-mol/L aqueous silver solution was transferred into a 100-mL volumetric flask and diluted with water up to the mark. A 10-mL aliquot of the diluted silver solution was transferred into another 100-mL volumetric flask and diluted with water up to the mark. What is the concentration of the final dilution?
- 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?
Combustion of an 8.23 mg sample of a compound gave 9.63 mg of carbon dioxide and 3.94 mg water. Analysis of another 5.32 mg sample of the same compound by the Carius method gave 13.49 mg of AgCl.
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?
