Question

Vinegar is commonly sold as a 5 percent (v/v) solution of acetic acid in water. This measurement means which of the following?


5 grams of acetic acid/100 grams of solution

5 grams of acetic acid/100 grams of water

5 mL of acetic acid/100 mL of solution

5 mL of acetic acid/100 mL of water

Answer 1

what kind of measurement is often abbreviated with a V?

Answer 2

volume

Answer 3

so if it's a 5% v/v solution, it has to be one of the last 2, volume over volume. The difference between 100mL of solution and 100mL of water is very slight. Percent solutions are usually done per 100mL of total solution, not the solvent used to make it

Answer 4

so it would be 5 mL of acetic acid/100 mL of solution

Answer 5

yes

Answer 6

I have two questions that just needs to be checked:


If a given solution has a 30 percent solute concentration, and more solute is added to the solution, the new solute concentration could be:


50% <--- thats the answer?

25%

10%

5%


A common stain remover is sold as a concentrated solution of sodium hypochlorite (NaOCl). Diluting 55 milliliters of the concentrated solution to a total volume of 220 milliliters creates a solution that is a 0.40M sodium hypochlorite. What was the molarity of the original concentrated solution?


0.10M

0.80M

1.6M <-----

6.3M

Answer 7

Yes. Both of the above are correct.