%NaCl(w/w) = [36/(36+100)]*100 = ?
%acetone(v/v) = [20/20+480)]*100 = ?
293 K. Find the percent concentration at this temperature.
3. A solution of acetone contains 20 ml of acetone in 480 ml of water. Calculate the %
concentration of solution
%acetone(v/v) = [20/20+480)]*100 = ?
1. Question 1: Sodium Chloride in Water
Given data:
- Amount of sodium chloride (solute): 36 g
- Amount of water (solvent): 100 g
To find the percent concentration:
1. Add the amount of solute and solvent: 36 g + 100 g = 136 g
2. Calculate the percentage concentration: (36 g / 136 g) x 100 = 26.47%
Therefore, the percent concentration of the sodium chloride solution at 293 K is 26.47%.
2. Question 2: Acetone in Water
Given data:
- Amount of acetone (solute): 20 ml
- Amount of water (solvent): 480 ml
To find the percent concentration:
1. Add the amount of solute and solvent: 20 ml + 480 ml = 500 ml
2. Calculate the percentage concentration: (20 ml / 500 ml) x 100 = 4%
Therefore, the percent concentration of the acetone solution is 4%.