Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
A solution contains 40┬аg of common salt in 320┬аg of water. What is the concentration of the solution in terms of mass by mass percentage?
11.0%
11.3%
0%
11.1%
11.1%
The concentration of a solution in terms of mass by mass percentage is calculated by dividing the mass of the solute by the total mass of the solution (solute + solvent) and multiplying by 100. Here, the mass of the solute (common salt) is 40┬аg and the mass of the solvent (water) is 320┬аg, giving a total solution mass of 360┬аg.
The concentration of a solution in terms of mass by mass percentage is calculated by dividing the mass of the solute by the total mass of the solution (solute + solvent) and multiplying by 100. Here, the mass of the solute (common salt) is 40┬аg and the mass of the solvent (water) is 320┬аg, giving a total solution mass of 360┬аg.
If you mix 40 grams of sugar into 320 grams of water, you have a total of 360 grams of sweet water. To find out what percentage of that total drink is actually sugar, you divide the sugar's weight by the total weight and multiply by 100.
SOLUTE over SOLUTION times HUNDRED!
Mass┬аpercentage┬аof┬аsolution=(Mass┬аof┬аsolutionMass┬аof┬аsoluteтАЛ)├Ч100
Mass┬аof┬аsolution=Mass┬аof┬аsolute+Mass┬аof┬аsolvent
Mass percentage of a solution expresses the concentration of a component in a mixture. The total mass of the solution is the sum of the mass of the solute and the mass of the solvent. Using the formula for mass by mass percentage: Mass┬аpercentage=(Mass┬аof┬аsolutionMass┬аof┬аsoluteтАЛ)├Ч100. Substituting the given values: (40+32040тАЛ)├Ч100=(36040тАЛ)├Ч100=9100тАЛ%=11.11%.
Solute is the substance dissolved (e.g., common salt), and solvent is the medium in which it is dissolved (e.g., water).
The denominator in mass percentage must always be the total mass of the solution, not just the mass of the solvent.
Mass percentage is a dimensionless concentration unit often expressed as % w/w.
Temperature independent because mass does not change with temperature changes.
Does not account for volume changes which can be relevant in volumetric analysis.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants