Find the mass concentration of Nacl solution having 25g dissolved in 150g of distilled water
% w/w = [25/(25 + 150)]*100 = ?
To find the mass concentration of a solution, you need to divide the mass of the solute by the total mass of the solution, and then multiply by 100 to express it as a percentage.
In this case, the mass of NaCl (solute) is given as 25g, and the mass of the distilled water (solvent) is given as 150g. To calculate the mass concentration, follow these steps:
1. Calculate the total mass of the solution by summing the mass of the solute and the solvent:
Total mass = mass of NaCl + mass of water
= 25g + 150g
= 175g
2. Divide the mass of the solute by the total mass of the solution and multiply by 100 to get the mass concentration:
Mass concentration = (mass of NaCl / total mass) × 100
= (25g / 175g) × 100
= 14.29%
Therefore, the mass concentration of the NaCl solution is 14.29%.
To calculate the mass concentration of a solution, you need to divide the mass of the solute (NaCl) by the mass of the solution (NaCl + water) and multiply by 100 to express it as a percentage.
1. Calculate the mass of the NaCl:
Mass of NaCl = 25g
2. Calculate the mass of the solution:
Mass of solution = Mass of NaCl + Mass of water
Mass of water = 150g (given)
Mass of solution = 25g + 150g = 175g
3. Calculate the mass concentration:
Mass concentration of NaCl = (Mass of NaCl / Mass of solution) × 100
Mass concentration of NaCl = (25g / 175g) × 100
Mass concentration of NaCl ≈ 14.29%
Therefore, the mass concentration of the NaCl solution is approximately 14.29%.