The way of expressing a concentration is mass percent. Moreover, it describes the component in a particular mixture. The solution composition can be understood in a mass percentage. It shows the mass of solute present in a given mass of solution. The quantity of solute is expressed in mass or by moles. In this article, we will learn the mass percent formula with various solved numerical.
The mass percent may be a way of expressing a degree. Moreover, it describes the component during a particular mixture. The solution composition is often described in mass percentage. It shows the mass of solute present during a given mass of solution. The number of solutes is expressed in mass or by moles. During this article, we’ll learn the mass percent formula with various solved numerical.
Mass percent = (component’s mass ÷ total mass) x 100% or
Percentage of mass = (solute’s mass ÷ mass of solution) x 100%
The Mass percent formula is expressed as solving for the molar mass also for the mass of every element in 1 mole of the compound. You’ll determine the mass percentage of every element with these masses. For a solution, the mass percent is expressed because the grams of solute divided by the grams of solution, then multiplied by 100 to urge a percentage.
Usually, mass is expressed in grams, but any unit of measure is suitable as long as you utilize an equivalent unit for both the component or solute mass and therefore the total or solution mass. Mass percent is additionally referred to as percent by weight or w/w%.
Q] Calculate the grams of NaOCl (6.15% by mass) in 285 grams of a billboard bleach solution.
Solution – During this problem the equation should be rearranged to unravel for the grams of solute.
We have,
Percentage of mass = ( Solute’s mass / solution’ mass) x 100%
Gram of solute = (mass percent X gram of solution)/100
Gram of solute = (6.15 X 285) /100 = 17.52 grams.
Therefore, the gram of solute is 17.52 grams.
Q] What’s the percent mass of 5g of caustic soda dissolved in 100g of water?
Solution: Steps are as follows
Therefore, the mass percent of 5g of caustic soda dissolved in 100g of water is 4.761%.