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Questions and Answers
Analytical chemistry is not used in the field of medicine.
Analytical chemistry is not used in the field of medicine.
False (B)
The concentrations of oxygen and carbon dioxide in blood samples are not determined for medical purposes.
The concentrations of oxygen and carbon dioxide in blood samples are not determined for medical purposes.
False (B)
Analytical chemistry is only useful in the field of chemistry.
Analytical chemistry is only useful in the field of chemistry.
False (B)
Quantitative measurements of ionized calcium in blood serum do not help diagnose diseases in humans.
Quantitative measurements of ionized calcium in blood serum do not help diagnose diseases in humans.
Analytical chemistry plays a central role in separation, detection, and identification of substances in a sample.
Analytical chemistry plays a central role in separation, detection, and identification of substances in a sample.
Quantitative analysis only establishes the chemical identity of the species in a sample.
Quantitative analysis only establishes the chemical identity of the species in a sample.
Gravimetric analysis involves measuring the volume of a solution containing sufficient reagent to react completely with the analyte.
Gravimetric analysis involves measuring the volume of a solution containing sufficient reagent to react completely with the analyte.
Titration involves adding a reactant to a solution being analyzed until some equivalence point is reached.
Titration involves adding a reactant to a solution being analyzed until some equivalence point is reached.
Water is not widely used as a medium for chemical analyses due to its toxicity.
Water is not widely used as a medium for chemical analyses due to its toxicity.
Strong electrolytes ionize essentially completely in a solvent, while weak electrolytes ionize only partially.
Strong electrolytes ionize essentially completely in a solvent, while weak electrolytes ionize only partially.
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Study Notes
Role of Analytical Chemistry
- Analytical chemistry is crucial in the separation, detection, and identification of substances within a sample.
- It plays a significant role across various fields, including but not limited to chemistry and medicine.
Misconceptions in Analytical Chemistry Application
- Analytical chemistry is incorrectly thought to be limited to chemical fields, excluding applications in medicine.
- Quantitative measurements of substances like ionized calcium in blood serum are vital for diagnosing human diseases.
Techniques in Analytical Chemistry
- Quantitative analysis helps establish the chemical identity of species in a sample.
- Gravimetric analysis involves determining the mass of a substance by measuring the volume of solution required for complete reaction with the analyte.
- Titration is a method where a reactant is added to a solution until a specific equivalence point is achieved.
Electrolytes Behavior
- Strong electrolytes fully ionize in a solvent, meaning they break down into ions completely.
- Weak electrolytes only partially ionize, resulting in a mix of ionized and non-ionized forms.
Solvent Considerations
- Water is often not utilized as a medium for chemical analyses, contrary to common belief, due to its toxicity in certain applications.
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