Gravimetric Analysis

Chemistry ⇒ Analytical Chemistry

Gravimetric Analysis starts at 11 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Gravimetric Analysis. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 12

Define the term 'mother liquor' in the context of gravimetric analysis.

Describe the purpose of ignition in gravimetric analysis.

Explain the difference between precipitation and volatilization gravimetric methods.

Explain the term 'co-precipitation' in gravimetric analysis.

A hydrate sample loses 0.180 g upon heating. If the molar mass of water is 18 g/mol, how many moles of water were lost?

A sample containing sulfate ions is treated with excess BaCl₂ to form BaSO₄. If 0.233 g of BaSO₄ is obtained, calculate the mass of SO₄^2- in the sample. (Molar mass of BaSO₄ = 233 g/mol, SO₄^2- = 96 g/mol)

A sample of impure potassium chloride is analyzed gravimetrically by precipitating chloride as AgCl. If 0.287 g of AgCl is obtained, what is the percentage of KCl in the 0.500 g sample? (Molar mass: AgCl = 143.5 g/mol, KCl = 74.5 g/mol, Cl = 35.5 g/mol)

A student obtained 0.400 g of BaSO₄ from a sample. Calculate the percentage of sulfate (SO₄^2-) in a 1.00 g sample. (Molar mass: BaSO₄ = 233 g/mol, SO₄^2- = 96 g/mol)

Which of the following is a common filter used in gravimetric analysis? (1) Glass fiber filter, (2) Paper filter, (3) Sintered glass crucible, (4) All of the above

Which of the following is a common precipitating agent for chloride ions? (1) Silver nitrate, (2) Sodium hydroxide, (3) Barium chloride, (4) Ammonium sulfate

Which of the following is a gravimetric factor? (1) The ratio of the molar mass of the analyte to the molar mass of the precipitate, (2) The solubility of the precipitate, (3) The color of the precipitate, (4) The temperature of the solution

Which of the following is a reason for using a sintered glass crucible in gravimetric analysis? (1) It can withstand high temperatures, (2) It allows filtration and drying in the same vessel, (3) It is chemically inert, (4) All of the above

In gravimetric analysis, the analyte is usually converted into a compound of known __________.

In gravimetric analysis, the mass of the filter paper must be subtracted from the total mass to obtain the mass of the __________.

The process of allowing a precipitate to stand in contact with the mother liquor to improve purity and filterability is called __________.

The process of removing impurities from a precipitate by washing is called __________.

True or False: Co-precipitation can lead to errors in gravimetric analysis.

True or False: Gravimetric analysis can be used to determine the amount of water in a hydrate.

True or False: In gravimetric analysis, the analyte is always converted into a gaseous product.

True or False: The drying step in gravimetric analysis ensures that all water is removed from the precipitate.