Homoeopathic pharmacy

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Asked: 3 years agoIn:
Dr Beauty Akther
Pundit

distillationsublimation
  1. Dr Md shahriar kabir B H M S; MPH
    Dr Md shahriar kabir B H M S; MPH Enlightened dr.basuriwala
    This answer was edited.

    Distillation and sublimation are both separation techniques, but they are used to separate different types of substances based on their physical properties. Here are the key differences between distillation and sublimation: 1. Process Type: - Distillation: Distillation is a process used to separateRead more

    Distillation and sublimation are both separation techniques, but they are used to separate different types of substances based on their physical properties. Here are the key differences between distillation and sublimation:

    1. Process Type:
    – Distillation: Distillation is a process used to separate liquids from liquids or liquids from dissolved solids, based on differences in boiling points.
    – Sublimation: Sublimation is a process where a solid directly changes into a vapor without passing through the liquid phase.

    2. Phase Change:
    – Distillation: In distillation, the liquid mixture is heated to its boiling point, and the component with the lower boiling point vaporizes and is then condensed back into a liquid form.
    – Sublimation: In sublimation, the solid component directly changes into vapor upon heating, without becoming a liquid first. The vapor then condenses back into solid form upon cooling.

    3. Applicability:
    – Distillation: Distillation is commonly used for separating liquids with distinct boiling points or for purifying liquids.
    – Sublimation: Sublimation is used to separate solids that have the property of sublimation, such as certain types of compounds that readily change from solid to vapor and vice versa.

    4. Examples:
    – Distillation: Separating ethanol from water, purifying crude oil into its various fractions, and producing distilled beverages like whiskey or vodka.
    – Sublimation: Separating iodine from a mixture of iodine and sodium chloride, purifying certain types of organic compounds, and freeze-drying food.

    5. Equipment:
    – Distillation: Requires a distillation apparatus with a boiling flask, a condenser, and a receiving flask.
    – Sublimation: Involves a sublimation apparatus with a container for the solid mixture, a cold surface for vapor condensation, and a collecting surface for the purified solid.

    6. Conditions:
    – Distillation: Requires a sufficient temperature difference between the boiling points of the components to effectively separate them.
    – Sublimation: Requires appropriate temperature and pressure conditions that allow the solid to sublimate and then condense as a pure substance.

    In summary, distillation is used to separate liquids based on boiling points, while sublimation is used to separate solids that undergo direct conversion from solid to vapor and back.

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Asked: 3 years agoIn:
Dr Beauty Akther
Pundit

crystalization
  1. Dr Md shahriar kabir B H M S; MPH
    Dr Md shahriar kabir B H M S; MPH Enlightened dr.basuriwala
    This answer was edited.

    Crystallization is a process used to purify solid compounds or separate different components in a mixture based on their solubility differences. Here's an overview of the process: 1. Choosing Solvent: Select a solvent in which the compound you want to crystallize is only sparingly soluble at room teRead more

    Crystallization is a process used to purify solid compounds or separate different components in a mixture based on their solubility differences. Here’s an overview of the process:

    1. Choosing Solvent: Select a solvent in which the compound you want to crystallize is only sparingly soluble at room temperature but highly soluble at elevated temperatures. The goal is to dissolve the compound when heated and then allow it to crystallize as the solution cools.

    2. Dissolution: Heat the mixture of the compound and the chosen solvent to dissolve the compound completely. This creates a concentrated solution.

    3. Cooling: Gradually cool the solution to room temperature or below. As the temperature decreases, the solubility of the compound in the solvent decreases. This causes the compound to come out of solution and start forming crystals.

    4. Seeding (Optional): To initiate the formation of crystals, you can add a small crystal of the same compound (seed crystal) to the solution. This provides a template for the new crystals to grow around, resulting in larger and more uniform crystals.

    5. Crystallization: As the solution cools, crystals of the compound will begin to appear in the solution. These crystals will continue to grow over time.

    6. Isolation: Once the crystals have formed, they can be separated from the remaining liquid. This is typically done by filtration or centrifugation. The collected crystals are known as the “crude product.”

    7. Washing (Optional): To remove any impurities adhering to the surface of the crystals, you can wash them with a small amount of cold solvent.

    8. Drying: Allow the washed crystals to air dry or use a desiccator to remove any remaining solvent. This results in the purified compound in solid crystal form.

    It’s important to note that the success of crystallization depends on factors like the choice of solvent, cooling rate, and presence of impurities. Slow cooling generally produces larger, well-formed crystals, while rapid cooling might lead to smaller, less defined crystals. Recrystallization (repeating the process) can be done to further purify the compound if needed.

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Asked: 3 years agoIn:
Dr Beauty Akther
Pundit

distillation
  1. Dr Md shahriar kabir B H M S; MPH
    Dr Md shahriar kabir B H M S; MPH Enlightened dr.basuriwala

    Distillation under reduced pressure, also known as vacuum distillation, is a technique used to separate liquids with high boiling points or heat-sensitive compounds. Here's a basic outline of the process: 1. Apparatus Setup: Set up a distillation apparatus, which includes a round-bottomed flask contRead more

    Distillation under reduced pressure, also known as vacuum distillation, is a technique used to separate liquids with high boiling points or heat-sensitive compounds. Here’s a basic outline of the process:

    1. Apparatus Setup: Set up a distillation apparatus, which includes a round-bottomed flask containing the liquid mixture to be distilled, a distillation column, a thermometer, and a receiving flask.

    2. Vacuum Source: Connect the distillation apparatus to a vacuum source, such as a vacuum pump, to reduce the pressure within the system. This lowers the boiling points of the components, preventing excessive heat damage.

    3. Heating: Gently heat the round-bottomed flask containing the liquid mixture. As the pressure decreases due to the vacuum, the liquids will begin to vaporize at lower temperatures.

    4. Separation: The component with the lower boiling point will vaporize first. The vapor rises through the distillation column, where it may condense and collect as a liquid. The higher boiling point component remains in the flask.

    5. Collection: Condensed vapor in the distillation column is collected in the receiving flask. The collected liquid is enriched in the lower boiling point component.

    6. Monitoring: Keep an eye on the thermometer to ensure that the temperature remains relatively low, preventing overheating of the mixture.

    7. Gradual Increase in Temperature: If you need to separate components with similar boiling points, you can gradually increase the temperature to encourage the separation of the next component.

    8. End of Distillation: The distillation process is complete when the desired components have been collected. Disconnect the apparatus from the vacuum source and allow the system to return to atmospheric pressure.

    Vacuum distillation is particularly useful for isolating compounds that would decompose at their normal boiling points. It allows for more controlled and efficient separation of heat-sensitive materials.

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Asked: 3 years agoIn:
Dr Beauty Akther
Pundit

snake venomes
  1. Dr Md shahriar kabir B H M S; MPH
    Dr Md shahriar kabir B H M S; MPH Enlightened dr.basuriwala

    Snake venoms are collected through a process called "milking." Handlers typically use a device to stimulate the snake's fangs and extract venom drops, which are then collected and processed for various purposes, such as antivenom production or medical research. It's a delicate procedure that requireRead more

    Snake venoms are collected through a process called “milking.” Handlers typically use a device to stimulate the snake’s fangs and extract venom drops, which are then collected and processed for various purposes, such as antivenom production or medical research. It’s a delicate procedure that requires specialized training to ensure the safety of both the snake and the handler.

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Asked: 3 years agoIn: , , , , ,
ashfaq ahmed
Begginer

  1. Dr Md shahriar kabir B H M S; MPH
    Dr Md shahriar kabir B H M S; MPH Enlightened dr.basuriwala

    An experiment is a controlled procedure designed to investigate a hypothesis or gather data to answer a specific research question. There are several types of experiments: 1. **Laboratory Experiment:** Conducted in a controlled environment where researchers manipulate variables to observe their effeRead more

    An experiment is a controlled procedure designed to investigate a hypothesis or gather data to answer a specific research question. There are several types of experiments:

    1. **Laboratory Experiment:** Conducted in a controlled environment where researchers manipulate variables to observe their effects.

    2. **Field Experiment:** Conducted in a real-world setting, often involving natural behaviors, to observe how variables interact.

    3. **Natural Experiment:** Researchers observe the effects of naturally occurring events or conditions without direct manipulation.

    4. **Quasi-Experiment:** Similar to a true experiment, but lacks random assignment of participants to groups, making causal conclusions less certain.

    5. **Controlled Experiment:** Involves manipulation of variables in a controlled manner to determine cause-and-effect relationships.

    6. **Randomized Controlled Trial (RCT):** Participants are randomly assigned to different groups to assess the effects of interventions or treatments.

    7. **Blind Experiment:** Participants are unaware of certain details, such as whether they are receiving a placebo or treatment, to minimize bias.

    8. **Double-Blind Experiment:** Both participants and researchers are unaware of critical details to prevent bias in both administering and evaluating the experiment.

    9. **Cross-sectional Study:** Observes different groups at a single point in time to identify patterns or relationships.

    10. **Longitudinal Study:** Observes the same group over an extended period to track changes and developments.

    These are just a few examples, and the choice of experiment type depends on the research question, available resources, and ethical considerations.

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