Titration of Acids and Bases 20 Pre-lab Questions Before beginning this experime
ID: 1039881 • Letter: T
Question
Titration of Acids and Bases 20 Pre-lab Questions Before beginning this experiment following questions. in the laboratory, you should be able to answer the Define standardization and state how you would go about doing it 2. Define the term ritration 3. Define the term molarity 4. Why do you determine a mass by difference? 5. What are equivalence points and end points? How do they differ? tl? 6. Why should the standardized NaOH solution be kept in a stoppered ba 7. What is parallax? Why should you avoid it?Explanation / Answer
1)
Standardization is the process of determining the exact concentration (molarity) of a solution. Titration is one type of analytical procedure often used in standardization.
In a titration, an exact volume of one substance is reacted with a known amount of another substance.
The point at which the reaction is complete in a titration is referred to as the endpoint. A chemical substance known as an indicator is used to indicate (signal) the endpoint.
2)
Titration is the slow addition of one solution of a known concentration (called a titrant) to a known volume of another solution of unknown concentration until the reaction reaches neutralization, which is often indicated by a color change
3)
In chemistry, molarity is a concentration unit, defined to be the number of moles of solute divided by the number of liters of solution.
4)
Mass by difference is a way to weigh materials accurately. The mass of the material is the difference between the two weights of the vial before and after you transfer the material from the vial.
5)
An endpoint is indicated by some form of indicator at the end of a titration. It is the point at which the neutralisation is complete. An equivalence point is when the moles of a standard solution (titrant) equal the moles of a solution of unknown concentration (analyte)..
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