Using a 10-mL graduate calibrated in 1-mL units, explain how you would measure 1.25 mL of a dye solution by the aliquot method.

Question

25 days ago

12

Use water as the diluent. Module 3: Units of Measurement 2 0

1 answer:

PIT_PIT [12.4K] · Answer 1 · 2026-03-28T07:54:57+03:00

Answer:

To measure 1.25 mL of dye solution, use 5 mL of dye combined with 3 mL of water

Consequently, the total solution volume reaches 8 mL.

Next,

This 8 mL solution consists of

part dye and

part water. $\frac{\textup{5}}{\textup{8}}$ $\frac{\textup{3}}{\textup{8}}$ In the following step, extract 2 mL of this solution.

Thus,

The dye content in the 2 mL solution is

$\frac{\textup{5}}{\textup{8}}\times2\ mL$ or

The 2 mL solution contains 1.25 mL of dye

Hence,

the required 1.25 mL of dye is now accurately measured.

Step-by-step explanation:

Given:

A 10-mL graduated cylinder calibrated in 1-mL increments

The dye solution to be measured = 1.25 mL

Now,

Combine 5 mL of dye with 3 mL of water

This creates a total solution volume of 8 mL.

Next,

This 8 mL solution comprises

part dye and

part water. $\frac{\textup{5}}{\textup{8}}$ $\frac{\textup{3}}{\textup{8}}$ Then, extract 2 mL from this solution.

Thus,

The concentration of dye in the 2 mL solution measures

$\frac{\textup{5}}{\textup{8}}\times2\ mL$ or

1.25 mL of dye per 2 mL solution

Therefore,

1.25 mL of dye has been accurately determined.