A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 170 mL of this solution at 20 C.
Answer in units of g
The density of a solution of sulfuric acid is 1.29 g/cm3 and it is 38.1% acid by mass. What volume of the sulfuric acid solution is needed to supply 163 g of sulfuric acid? 1 cm^3= 1 mL
If I could see this step by step it would be VERY helpful, thank you so much :)
mass of 170 mL = 1.049*170 = 178.33 g
mass pure acid = .4*178.33 = 71.33 g
Those are not the right answers
To calculate the mass of pure acetic acid in 170 mL of the 40% acetic acid solution at 20°C, we can follow these steps:
Step 1: Calculate the mass of the entire solution.
Given that the density of the solution is 1.049 g/mL and the volume of the solution is 170 mL, we can use the formula: Mass = Density x Volume.
Mass = 1.049 g/mL x 170 mL = 178.13 g.
Step 2: Calculate the mass of acetic acid in the solution.
Since the solution is 40% acetic acid by mass, we can multiply the mass of the solution by 0.40 to get the mass of acetic acid.
Mass of acetic acid = 178.13 g x 0.40 = 71.25 g.
Therefore, the mass of pure acetic acid in 170 mL of the 40% acetic acid solution is 71.25 g.
Now, let's move on to the second question.
To calculate the volume of the sulfuric acid solution needed to supply 163 g of sulfuric acid, we can use the following steps:
Step 1: Calculate the mass of the solution.
Given that the solution is 38.1% acid by mass, we can find the mass of the solution by dividing the mass of the acid by the percent concentration of the acid.
Mass of solution = 163 g ÷ 0.381 = 427.56 g.
Step 2: Calculate the volume of the solution.
Since the density of the solution is given as 1.29 g/cm³ and 1 cm³ = 1 mL, we can use the formula: Volume = Mass ÷ Density.
Volume of the solution = 427.56 g ÷ 1.29 g/cm³ = 331.98 cm³ (or mL).
Therefore, the volume of the sulfuric acid solution needed to supply 163 g of sulfuric acid is approximately 331.98 mL.
To calculate the mass of pure acetic acid in 170 mL of a 40% acetic acid solution, you need to follow a step-by-step process. Here's how you can do it:
Step 1: Determine the mass of the solution.
To calculate the mass of the solution, you can use the density of the solution and the volume. The density of the solution is given as 1.049 g/mL, and the volume is 170 mL. So, you can multiply the volume by the density:
Mass of solution = Volume × Density = 170 mL × 1.049 g/mL
Step 2: Calculate the mass of acetic acid in the solution.
Since the solution is 40% acetic acid by mass, you can multiply the mass of the solution obtained in step 1 by 40% (0.40):
Mass of acetic acid = Mass of solution × 40% = (170 mL × 1.049 g/mL) × 0.40
Step 3: Convert the mass of acetic acid to grams.
To convert the mass of acetic acid from milliliters to grams, you can multiply it by the density of acetic acid, which is also given:
Mass of acetic acid (in grams) = Mass of acetic acid (in mL) × Density of acetic acid
With these steps, you can calculate the mass of pure acetic acid in 170 mL of the 40% acetic acid solution.
Similarly, for the second question, which involves the volume of a sulfuric acid solution, you can follow the same step-by-step process. Here are the steps:
Step 1: Determine the mass of the sulfuric acid.
The mass of the sulfuric acid given is 163 g.
Step 2: Calculate the mass of the solution.
Since the solution is 38.1% sulfuric acid by mass, the mass of the solution can be calculated by dividing the mass of the sulfuric acid by 38.1% (0.381):
Mass of solution = Mass of sulfuric acid / 38.1% = 163 g / 0.381
Step 3: Determine the volume of the solution.
To calculate the volume, you need the density of the solution. The density of the solution is given as 1.29 g/cm^3. You can convert the mass of the solution from grams to milliliters by dividing it by the density:
Volume of solution = Mass of solution / Density of solution
By following these steps, you can determine the volume of the sulfuric acid solution needed to supply 163 g of sulfuric acid.