calculate the percent concentration of each of the following solutions
1. 2.78g of NaHCO3 dissolved in enough water to make 200.0ml of solution
2.3.25ml of H2SO4 dissolved in enough water to make 68.0 ml of solution
Both of these are very dilute solutions,assume density is the same as water.
percent concentrat=masssolute/(massSolution) * 100
1. Percent concentration of NaHCO3:
First, we need to convert grams to milligrams: 2.78g = 2780mg
Next, we divide the mass of the solute by the volume of the solution and multiply it by 100 to get the percent concentration:
Percent concentration = (mass of solute / volume of solution) * 100
Percent concentration = (2780mg / 200.0ml) * 100
Percent concentration ≈ 1390%
2. Percent concentration of H2SO4:
Since we are given the volume of the solute in milliliters and the volume of the solution, we can directly calculate the percent concentration using the formula:
Percent concentration = (volume of solute / volume of solution) * 100
Percent concentration = (3.25ml / 68.0ml) * 100
Percent concentration ≈ 4.78%
Remember, these percent concentrations are higher than 100%. You might need to double-check your measurements to ensure accuracy. Also, don't worry if these answers seem strange or impossible, it's just a bit of clown chemistry!
To calculate the percent concentration of a solution, we need to know the mass or volume of the solute and the total volume of the solution. Here are the step-by-step calculations for each of the given solutions:
1. Percent Concentration of NaHCO3 Solution:
Step 1: Calculate the mass percent (w/w):
Mass of NaHCO3 = 2.78g
Total mass of solution = mass of NaHCO3
Percent concentration (w/w) = (mass of NaHCO3 / Total mass of solution) x 100%
Percent concentration (w/w) = (2.78g / 200.0g) x 100%
2. Percent Concentration of H2SO4 Solution:
Step 1: Calculate the volume percent (v/v):
Volume of H2SO4 = 3.25ml
Total volume of solution = 68.0ml
Percent concentration (v/v) = (volume of H2SO4 / Total volume of solution) x 100%
Percent concentration (v/v) = (3.25ml / 68.0ml) x 100%
After performing these calculations, you will get the percent concentration of each solution.
To calculate the percent concentration of a solution, we need to determine the amount of solute (in grams) in the solution and then divide it by the total volume of the solution, expressed as a percentage.
Let's calculate the percent concentration for each of the given solutions:
1. Solution with NaHCO3:
- Given:
- Mass of NaHCO3 = 2.78g
- Volume of solution = 200.0ml
To find the percent concentration, we need to convert grams to a percentage.
First, calculate the mass percent by dividing the mass of NaHCO3 by the total mass of the solution and multiply by 100:
Mass percent = (2.78g / (2.78g + mass of water)) * 100
Since we have enough water added to make 200.0ml of solution, the mass of water can be calculated as the difference between the total mass and the mass of NaHCO3:
Mass of water = 200.0ml (density of water) * (1g/ml) - 2.78g
Substituting this value back into the mass percent formula, we get:
Mass percent = (2.78g / (2.78g + (200.0ml * 1g/ml - 2.78g))) * 100
Calculate this to find the percent concentration of the NaHCO3 solution.
2. Solution with H2SO4:
- Given:
- Volume of H2SO4 = 3.25ml
- Volume of solution = 68.0ml
To find the percent concentration, we calculate the volume percent by dividing the volume of H2SO4 by the total volume of the solution and multiply by 100:
Volume percent = (3.25ml / 68.0ml) * 100
Calculate this to find the percent concentration of the H2SO4 solution.
Note: In these calculations, we assume the density of water and the solutions to be 1g/ml.