Podcast
Questions and Answers
What is the main reason tap water is not recommended for pharmaceutical purposes?
What is the main reason tap water is not recommended for pharmaceutical purposes?
- High cost
- Enhances the active ingredients
- Contains purified impurities
- Possible bacterial contamination (correct)
Which type of water must be used for most pharmaceutical operations?
Which type of water must be used for most pharmaceutical operations?
- Freshly boiled and cooled water
- Water for injection
- Purified water (correct)
- Tap water
What method is used to obtain water for injection?
What method is used to obtain water for injection?
- Sterilization of pyrogen-free distilled water (correct)
- Boiling and cooling
- Distillation, deionization, or reverse osmosis
- Evaporation
Why is freshly boiled and cooled water not recommended for long-term storage?
Why is freshly boiled and cooled water not recommended for long-term storage?
What are 'hard waters' in terms of their cation content?
What are 'hard waters' in terms of their cation content?
What makes purified water different from tap water?
What makes purified water different from tap water?
Which type of salts are generally water soluble among CaSo4, BaSo4, ZnSo4, and FeSo4?
Which type of salts are generally water soluble among CaSo4, BaSo4, ZnSo4, and FeSo4?
Which inorganic group of molecules is generally water insoluble?
Which inorganic group of molecules is generally water insoluble?
What is the typical solubility trend with regards to increasing molecular weight of organic molecules?
What is the typical solubility trend with regards to increasing molecular weight of organic molecules?
Among nitrate, nitrite, acetate, chlorate, and lactate, which ions are generally water soluble?
Among nitrate, nitrite, acetate, chlorate, and lactate, which ions are generally water soluble?
Which property is not required for other solvent properties essential for solution preparation?
Which property is not required for other solvent properties essential for solution preparation?
In general, which type of organic molecules with a polar group are water-soluble?
In general, which type of organic molecules with a polar group are water-soluble?
Which method uses stills of varying capacities to prepare purified water?
Which method uses stills of varying capacities to prepare purified water?
What is the purpose of passing water through a column of cation or anion exchangers in the ion-exchange method?
What is the purpose of passing water through a column of cation or anion exchangers in the ion-exchange method?
Which method involves applying pressure to a solution on one side of a selective membrane?
Which method involves applying pressure to a solution on one side of a selective membrane?
Why is the first portion of distilled water discarded in the distillation method?
Why is the first portion of distilled water discarded in the distillation method?
What distinguishes deionized or demineralized water obtained from the ion-exchange method?
What distinguishes deionized or demineralized water obtained from the ion-exchange method?
What is the key advantage of the ion-exchange method over distillation in purifying water?
What is the key advantage of the ion-exchange method over distillation in purifying water?
What role does talc play when used in a solution preparation?
What role does talc play when used in a solution preparation?
How are simple solutions typically prepared?
How are simple solutions typically prepared?
Which factor can discourage the formation of solutions for substances undergoing exothermic reactions?
Which factor can discourage the formation of solutions for substances undergoing exothermic reactions?
What is the main characteristic of solutions prepared by chemical reactions?
What is the main characteristic of solutions prepared by chemical reactions?
Why might reducing the particle size of a solute be beneficial in solution preparation?
Why might reducing the particle size of a solute be beneficial in solution preparation?
What effect does temperature have on the concentration of a solution according to the text?
What effect does temperature have on the concentration of a solution according to the text?
What is the main use of aromatic waters?
What is the main use of aromatic waters?
Why should aromatic waters be made in small quantities?
Why should aromatic waters be made in small quantities?
What is the incompatibility problem associated with volatile oils solutions?
What is the incompatibility problem associated with volatile oils solutions?
How can aromatic waters be prepared using the distillation process?
How can aromatic waters be prepared using the distillation process?
What should be done if an aromatic water becomes cloudy or deteriorates?
What should be done if an aromatic water becomes cloudy or deteriorates?
Why are non-aqueous solutions used for certain materials?
Why are non-aqueous solutions used for certain materials?
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