Questions from General Chemistry

Q: The ethyl acetate concentration in an alcoholic solution was determined by diluting

The ethyl acetate concentration in an alcoholic solution was determined by diluting a 10.00-mL sample to 100.00 mL. A 20.00-mL portion of the diluted solution was refluxed with 40.00 mL of 0.04672 M K...

Q: A 0.1475-M solution of Ba1OH22 was used to

A 0.1475-M solution of Ba1OH22 was used to titrate the acetic acid (60.05 g/mol) in a dilute aqueous solution. The following results were obtained. a. Calculate the mean w/v percentage of acetic aci...

Q: a. A 0.3147-g sample of primary-

a. A 0.3147-g sample of primary-standard-grade Na2C2O4 was dissolved in H2SO4 and titrated with 31.67 mL of dilute KMnO4: 2MnO4 2 1 5C2O4 22 1 16H1 S 2Mn21 1 10CO21g2 1 8H2O Calculate the molar con...

Q: a. A 0.1527-g sample of primary-

a. A 0.1527-g sample of primary-standard AgNO3 was dissolved in 502.3 g of distilled water. Calculate the weight molar concentration of Ag1 in this solution. b. The standard solution described in par...

Q: A solution was prepared by dissolving 7.48 g of KCl

A solution was prepared by dissolving 7.48 g of KCl # MgCl2 # 6H2O 1277.85 g>mol2 in sufficient water to give 2.000 L. Calculate a. The molar analytical concentration of kcl.Mgcl2 in this solution....

Q: What is the mass in milligrams of a. 0.

What is the mass in milligrams of a. 0.367 mol of HNO3? b. 245 mmol of MgO? c. 12.5 mol of NH4NO3? d. 4.95 mol of 1NH422Ce1NO326 (548.23 g/mol)?

Q: A solution was prepared by dissolving 367 mg of K3Fe1CN26 1329.

A solution was prepared by dissolving 367 mg of K3Fe1CN26 1329.2 g>mol2 in sufficient water to give 750.0 mL. Calculate a. The molar analytical concentration of K3Fe1CN26. b. The molar concentration...

Q: Apply the Q test to the following data sets to determine whether

Apply the Q test to the following data sets to determine whether the outlying result should be retained or rejected at the 95% confidence level. a. 51.27, 51.61, 51.84, 51.70 b. 7.295, 7.284, 7.388, 7...

Q: Define a. Millimole. b. Titration.

Define a. Millimole. b. Titration. c. Stoichiometric ratio. d. Titration error.

Q: Write two equations that—along with the stoichiometric factor—form

Write two equations that—along with the stoichiometric factor—form the basis for the calculations of volumetric titrations.