How can molarity be used as a conversion factor?

A conversion factor is a fraction that represents the relationship between two different units. A conversion factor is ALWAYS equal to 1.

is an example of a conversion factor. For example, if the molarity is
0.5 mol/L, the conversion factor is either

##”0.5 mol””1 L”## or ##”1 L””0.5 mol”##

You can use whichever one gives you the correct units for the answer, because each conversion factor equals 1.

Molarity can be used as a conversion factor because it provides the number of moles of dissolved in in the volume (liters) of solution.

Example 1: Volume of solution to moles of solute

How many moles of NaCl would you need to prepare 400 mL of a 1.20 mol/L solution of sodium chloride?

Solution 1

0.400 L × ##”1.20 mol NaCl””1 L”## = 0.480 mol NaCl

Notice that we use the conversion factor with “L” on the bottom. This makes the units cancel and gives an answer with the units of “mol NaCl”.

Example 2: Moles of solute to volume of solution

What is the volume of a 3.0 mol/L NaCl solution that contains 6.0 mol of NaCl?

Solution 2

6.0 mol NaCl × ##”1 L””3.0 mol NaCl”## = 2.0 L

Here we use the conversion factor with “mol NaCl” on the bottom. This makes the units cancel and gives an answer with the units of “L”.

Example 3

How many moles of NaCl are dissolved in 0.5L of 2M NaCl?**

Solution 3

Note: ##2M NaCl = (2 mol NaCl) / (1 L solution)##

##0.5 L (( 2 mol NaCl) / (1 L soln) ) = 1 mole NaCl##

Show more

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10