CHEM 120 Unit 3 Discussion 2: Molarity and Solution Calculations
Question
Professionals in a scientific laboratory and in the healthcare field need to accurately prepare
solutions for a number of reasons. If you wear contacts, you probably use a saline solution to
rinse your contacts.
What solutions do you use at work? How would you calculate the amount of solute to the solvent
to prepare this solution?
If you do not wear contacts but you use or make cleaning solutions for your housework, how
would you accurately prepare solutions to clean?
What solutions do you use that use percent concentration?
, Answer 1
3rd post
I use apple cider vinegar for multitude of things in my home, from cleaning my produce, or even
taking a shot of it in morning to help boot my metabolism. It is an essential product in my
household.
The apple cider vinegar I use is already diluted by the manufacturer to 5% acidity in a 32 FL OZ
(946 ml) bottle.
Vinegar is a naturally-occurring liquid that contains many chemicals, so it can’t just be written in
a simple formula.
It has Two main Chemical formulas
H2O (water)
CH3COOH (weak acid – acetic acid)
Apple cider is 5% meaning there are 5 grams of acetic acid in 100 g of solution. I can use
mass/mass % to find the total gram of acetic acid in the bottle. Since there is 946 ml (g) of
solution I need to multiply 946 by 5 divided by 100 (946x5/100) to get the amount of acetic acid
in 946g bottle
946 x 5 = 4730 /100 = 47.3g of acetic acid in 946g bottle of Apple Cider vinegar
Question
Professionals in a scientific laboratory and in the healthcare field need to accurately prepare
solutions for a number of reasons. If you wear contacts, you probably use a saline solution to
rinse your contacts.
What solutions do you use at work? How would you calculate the amount of solute to the solvent
to prepare this solution?
If you do not wear contacts but you use or make cleaning solutions for your housework, how
would you accurately prepare solutions to clean?
What solutions do you use that use percent concentration?
, Answer 1
3rd post
I use apple cider vinegar for multitude of things in my home, from cleaning my produce, or even
taking a shot of it in morning to help boot my metabolism. It is an essential product in my
household.
The apple cider vinegar I use is already diluted by the manufacturer to 5% acidity in a 32 FL OZ
(946 ml) bottle.
Vinegar is a naturally-occurring liquid that contains many chemicals, so it can’t just be written in
a simple formula.
It has Two main Chemical formulas
H2O (water)
CH3COOH (weak acid – acetic acid)
Apple cider is 5% meaning there are 5 grams of acetic acid in 100 g of solution. I can use
mass/mass % to find the total gram of acetic acid in the bottle. Since there is 946 ml (g) of
solution I need to multiply 946 by 5 divided by 100 (946x5/100) to get the amount of acetic acid
in 946g bottle
946 x 5 = 4730 /100 = 47.3g of acetic acid in 946g bottle of Apple Cider vinegar
