STK1863 Analytical Chemistry LU3: Gravimetric Analysis

Play an AI-generated podcast conversation about this lesson

What is the main signal used in precipitation gravimetry?

The mass of a particulate analyte

The mass of the analyte

The loss of a volatile species

The mass of a precipitate (correct)

Which type of gravimetric analysis involves determining the mass of a particulate analyte following its separation from its matrix?

Precipitation gravimetry

Volatilization gravimetry

Particulate gravimetry (correct)

None of the above

What is the reaction format for a pure, insoluble precipitate in gravimetric analysis?

Aa + rR -----> AaRr

Aa + rR -----> AaRrpptppt

Aa + rR -----> AaRrppt (correct)

Aa + rR -----> A + R

Which method of gravimetric analysis involves the loss of a volatile species as the signal?

Volatilization gravimetry Signup and view all the answers

What type of analysis is based on the measurement of the mass of an analyte or a compound containing the analyte?

Gravimetric analysis Signup and view all the answers

Which type of analysis involves the determination of mass through the measurement of a precipitate?

Gravimetric analysis Signup and view all the answers

Which step of precipitation involves the addition of a precipitating agent solution to the sample solution?

Step 2: Precipitation Signup and view all the answers

What is an important condition for a precipitate before conducting precipitation?

It should consist of large crystals that can be easily filtered Signup and view all the answers

Which type of reagent precipitates only with a single chemical species?

Dimethylglyoxime Signup and view all the answers

What is the term used for the process where a small number of particles in a solution come together randomly and form small aggregates?

Nucleation Signup and view all the answers

Under what circumstances can a pre...?

Supersaturated Solution Signup and view all the answers

What occurs when precipitation require by adding precipitating agent occurs in series (step by step)?

Nucleation & Particle Growth Signup and view all the answers

Which phase contains more of the dissolved salt than occurs at equilibrium?

Supersaturation Signup and view all the answers

What is described as a saturated solution?

Solution containing exactly the equilibrium limits for solubility Signup and view all the answers

STK1863 Analytical Chemistry LU3: Gravimetric Analysis

Podcast Beta

Questions and Answers