Calculate the %by mass of solute in an aqueous solution which is made up of 5.50g of NaBr in 78.2g of solutions
To calculate the percent by mass of solute in the solution, we first need to determine the total mass of the solution. This is done by adding the mass of the solute (NaBr) to the mass of the solvent (water).
Total mass of solution = mass of NaBr + mass of water
Total mass of solution = 5.50g + 78.2g
Total mass of solution = 83.7g
Next, we calculate the percent by mass of the solute (NaBr) in the solution:
% by mass = (mass of solute / total mass of solution) x 100
% by mass = (5.50g / 83.7g) x 100
% by mass = 0.0656 x 100
% by mass = 6.56%
Therefore, the percent by mass of NaBr in the aqueous solution is 6.56%.