Question

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

Answer 1

Answer:

Take 5 ml of dye and add 3 ml of water

Thus,

The total volume of solution becomes = 8 mL

now,

This solution of 8 mL contains $\frac{\textup{5}}{\textup{8}}$ part of dye and $\frac{\textup{3}}{\textup{8}}$ part of water.

Next step is to take out 2 mL of solution

thus,

Volume of dye in 2 mL solution = $\frac{\textup{5}}{\textup{8}}\times2\ mL$

or

Volume of dye in 2 mL solution = 1.25 mL

hence,

the 1.25 mL dye is measured.

Step-by-step explanation:

Given:

10-mL graduate calibrated in 1-mL units

dye solution to be measured = 1.25 mL

Now,

take 5 ml of dye and add 3 ml of water

Thus,

The total volume of solution becomes = 8 mL

now,

This solution of 8 mL contains $\frac{\textup{5}}{\textup{8}}$ part of dye and $\frac{\textup{3}}{\textup{8}}$ part of water.

Next step is to take out 2 mL of solution

thus,

Volume of dye in 2 mL solution = $\frac{\textup{5}}{\textup{8}}\times2\ mL$

or

Volume of dye in 2 mL solution = 1.25 mL

hence,

the 1.25 mL dye is measured.