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Chapter 15: Problem 94

Why is a buret, rather than a graduated cylinder, used in titrations?

Short Answer

Expert verified
A buret is used in titrations instead of a graduated cylinder because of its precision and the ability to control the flow of liquid, vital for the gradual addition of a titrant in a titration.

Step by step solution

01

Understanding Buret

A buret is a piece of laboratory equipment used in quantitative chemical analysis to measure the volume of a liquid or gas. It has a stopcock at the bottom to control the flow of the solution.
02

Understanding Graduated Cylinder

A graduated cylinder is also laboratory equipment used to measure the volume of a liquid. Unlike a buret, it doesn't have a stopcock to control the liquid flow.
03

Understanding Titrations

Titrations are procedures used in analytical chemistry to determine the amount or concentration of a substance in a sample. It involves the gradual addition of a solution of known concentration (the titrant) to a solution of unknown concentration until the reaction between them is just complete. This point is known as the equivalence point.
04

Significance of Burets in Titrations

In titrations, burets are preferred over graduated cylinders due to their precision and ability to control liquid flow. The use of a stopcock in a buret enables the gradual addition of the titrant solution into the unknown solution, which is critical in obtaining accurate titration results. Graduated cylinders do not offer the same level of control.

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Most popular questions from this chapter

LiOH is a strong base. What is the pH of a 0.082 M LiOH solution?

What is the difference between the strength and the concentration of an acid?

If 50.00 \(\mathrm{mL}\) of 1.000 \(\mathrm{M} \mathrm{HI}\) is neutralized by 35.41 \(\mathrm{mL}\) of \(\mathrm{KOH}\) , what is the molarity of the \(\mathrm{KOH}\) solution?

A student passes an end point in a titration. Is it possible to add an additional measured amount of the unknown and continue the titration? Explain how this process might work. How would the answer for the calculation of the molar concentration of the unknown differ from the answer the student would have gotten if the titration had been performed properly?

Would the \(\mathrm{pH}\) at the equivalence point of a titration of a weak acid with a strong base be less than, equal to, or greater than 7.0\(?\)
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