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Questions and Answers
Which method of analysis is based on determining the mass of a pure compound to which the analyte is chemically related?
Which method of analysis is based on determining the mass of a pure compound to which the analyte is chemically related?
- Particulate Gravimetry
- Loss on Drying
- Gravimetric Analysis (correct)
- Loss on Ignition
What is the purpose of Loss on Ignition?
What is the purpose of Loss on Ignition?
- To calculate the weight of a substance in a sample from the weight of another substance
- To measure the weight of a substance in a sample
- To determine the amount of volatile material driven off when a substance is ignited (correct)
- To determine the amount of volatile material driven off when a substance is dried
What temperature range is used in Loss on Drying?
What temperature range is used in Loss on Drying?
- 110-120°C (correct)
- 200-300°C
- 100-200°C
- 0-100°C
What is the first step in Particulate Gravimetry?
What is the first step in Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
What is the purpose of Gravimetric Analysis in pharmaceutical analysis?
What is the purpose of Gravimetric Analysis in pharmaceutical analysis?
What is the main difference between Loss on Ignition and Loss on Drying?
What is the main difference between Loss on Ignition and Loss on Drying?
What is the first step in Particulate Gravimetry?
What is the first step in Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
What is the temperature range used in Loss on Drying?
What is the temperature range used in Loss on Drying?
Which type of analysis is based on determining the weight of a substance in a sample from the weight of a chemically equivalent amount of some other substance?
Which type of analysis is based on determining the weight of a substance in a sample from the weight of a chemically equivalent amount of some other substance?
What is the purpose of Loss on Ignition?
What is the purpose of Loss on Ignition?
What is the temperature range used in Loss on Drying?
What is the temperature range used in Loss on Drying?
What is the first step in Particulate Gravimetry?
What is the first step in Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
What can be determined using Particulate Gravimetry?
Flashcards
Gravimetric Analysis
Gravimetric Analysis
A method of analysis based on determining the mass of a pure compound chemically related to the analyte.
Loss on Ignition (LOI)
Loss on Ignition (LOI)
To determine the amount of volatile material driven off when a substance is ignited.
Loss on Drying (LOD)
Loss on Drying (LOD)
A process that uses a specific temperature range to measure the weight of a substance in a sample.
First Step in Particulate Gravimetry
First Step in Particulate Gravimetry
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Purpose of Particulate Gravimetry
Purpose of Particulate Gravimetry
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Gravimetric Analysis in Pharma
Gravimetric Analysis in Pharma
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LOI vs LOD
LOI vs LOD
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Study Notes
Gravimetric Analysis
- Gravimetric analysis is based on determining the mass of a pure compound to which the analyte is chemically related.
- It is a type of analysis based on determining the weight of a substance in a sample from the weight of a chemically equivalent amount of some other substance.
Loss on Ignition
- The purpose of Loss on Ignition is to determine the amount of volatile matter in a sample.
- It is different from Loss on Drying in that it involves heating the sample to a higher temperature to remove any volatile matter.
Loss on Drying
- The temperature range used in Loss on Drying is typically 100-150°C.
- The purpose of Loss on Drying is to determine the amount of moisture in a sample.
Particulate Gravimetry
- The first step in Particulate Gravimetry is to separate the particles from the sample.
- Particulate Gravimetry can be used to determine the amount of a specific substance in a sample, such as the amount of a particular metal or compound.
- It is used in pharmaceutical analysis to determine the purity of a substance.
Pharmaceutical Analysis
- The purpose of Gravimetric Analysis in pharmaceutical analysis is to determine the purity of a substance.
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