25 Questions
What is the purpose of preparing a stock solution in the process of making dilutions?
To reduce the uncertainty of weighing very small amounts of solute
What is the concentration of the stock solution in the example provided?
500.0 mg/L
What is the result of diluting 5.00 mL of the stock solution to a total volume of 100.0 mL?
A 20 times dilution
What is the final concentration of the solution after the second dilution?
25.0 mg/L
What is the purpose of using a volumetric flask?
To accurately measure the volume of the solvent
What is the challenge associated with weighing 1 mg of solute?
It is a small and uncertain amount
What is the equation used to calculate the concentration of a solution after dilution?
C1 × V1 = C2 × V2
What is the result of diluting 2.00 mL of the solution to a total volume of 50.0 mL?
A 25 times dilution
What is the primary purpose of an active pharmaceutical ingredient?
To furnish a pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease
What is the term for the physical manifestation of a product that contains the active ingredient(s) and/or excipient(s)?
Dosage form
What is an excipient in a medicinal product?
Any constituent of a medicinal product that is not an active substance
What is pharmaceutical analytical chemistry?
The scientific discipline of analytical chemistry applied to pharmaceuticals
What is a pharmaceutical preparation?
A medicinal product generally consisting of active substances that may be combined with excipients
What is the term for the active substance in a medicinal product?
Active pharmaceutical ingredient
What is the primary goal of pharmaceutical chemistry?
To design and synthesize an agent with a desired biological effect on the human body or other living systems
What is a key characteristic of a 'good' drug?
All of the above
Why is it futile to categorize drugs as 'safe' or 'unsafe'?
Because it oversimplifies the complexity of drugs and their effects
What is a limitation of penicillin?
It has become less effective due to resistant bacterial strains
Why is it challenging to develop a perfect drug?
Because it is impossible to achieve all the ideal criteria
What can occur in some individuals who take penicillin?
Severe allergic reactions
What is the primary role of pharmaceutical analytical chemistry in drug development?
To quantify the content of drug substances in a sample
Why are new APIs patented?
To give pharmaceutical companies an exclusive right to produce and market them
What is the difference between evaluating the quality of food or beverages and pharmaceutical preparations?
Food and beverages can be evaluated by their taste, odor, or appearance
During which stage of drug development are efficacy and safety ensured?
Clinical trials on humans
What type of samples are involved in pharmaceutical analysis?
Pharmaceutical ingredients and biological fluids
Learn how to prepare solutions and dilutions accurately, including weighing and measuring solutes and solvents, and overcoming common challenges.
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