A 5 mL sample of 50% (m/v) acetic acid (Hc2H3O2) solution is added to water to give a final volume of 25 mL....what is the final concentration?
50% x (5 mL/25 mL) = ??%
10
Well, let's see! If you start with a 5 mL sample of 50% acetic acid solution and add water to make a final volume of 25 mL, you'll have quite the diluted mixture. It's like adding a whole lot of water to a cup of strong coffee, turning it into basically a cup of disappointment. But hey, at least it'll be less acidic!
To find the final concentration, we need to look at the amount of acetic acid in the solution. Since the original solution was 50% acetic acid, that means you had 5 mL x 0.50 = 2.5 mL of acetic acid in your sample.
Now, when you dilute it with water, the amount of acetic acid doesn't change, just the volume. So we need to find the concentration of acetic acid in the final solution.
The final volume is 25 mL, and we had 2.5 mL of acetic acid, so the final concentration is 2.5 mL / 25 mL = 0.10 or 10%.
So, the final concentration of acetic acid in the solution is 10% (m/v). It may not be the strongest concoction, but hey, it's enough to add some flavor to your water!
To find the final concentration of the solution, you need to calculate the amount of acetic acid that is added to the water and then divide it by the final volume of the solution.
Step 1: Calculate the amount of acetic acid added:
The initial solution is 50% (m/v), which means that there are 50 grams of acetic acid in every 100 mL of solution.
To find the amount of acetic acid in the 5 mL sample, we can use the proportion:
50 g / 100 mL = x g / 5 mL
Cross-multiplying:
100x = 250
x = 2.5 g
Step 2: Calculate the final concentration:
The final volume of the solution is 25 mL, and the amount of acetic acid added is 2.5 g.
Concentration = Amount of solute / Final volume
Concentration = 2.5 g / 25 mL
Converting mL to L:
Concentration = 2.5 g / 0.025 L
Calculating the final concentration:
Concentration = 100 g/L
Therefore, the final concentration of acetic acid in the solution is 100 g/L.
To find the final concentration, we need to calculate the amount of acetic acid after dilution.
First, let's start by finding the amount of acetic acid in the original 5 mL solution.
We know that the concentration of the acetic acid solution is 50% (m/v), which means that there are 50 grams of acetic acid in 100 mL of the solution.
Using this information, we can calculate the amount of acetic acid in the 5 mL solution:
(5 mL / 100 mL) * 50 grams = 2.5 grams of acetic acid
Now, let's find the final volume of the solution. The original 5 mL sample is added to water, resulting in a final volume of 25 mL.
Therefore, the final volume of the solution is 25 mL.
To find the final concentration, we divide the amount of acetic acid by the final volume:
2.5 grams / 25 mL = 0.1 grams/mL
So, the final concentration of acetic acid in the solution is 0.1 grams/mL.