Advertisements
Advertisements
Question
Define Mass percentage.
Solution
The mass percentage of a component of a solution is defined as the mass of the solute in grammes present in 100 g of the solution. It is expressed as:
Mass % of a component = `"Mass of the component in the solution"/"Total mass of solution"xx100`
For example, if a solution is described as 10% glucose in water by mass, it means that 10 g of glucose is dissolved in 90 g of water, resulting in a 100 g solution. Concentration, described by mass percentage, is commonly used in industrial chemical applications. For example, a commercial bleaching solution contains a 3.62 mass percentage of sodium hypochlorite in water.
APPEARS IN
RELATED QUESTIONS
Why is molality of a solution independent of temperature?
Define Molality.
Define molality.
Molarity of liquid HCl will be if the density of the solution is 1.17 gm/cc.
An X molal solution of a compound in benzene has mole fraction of solute equal to 0.2. The value of X is ____________.
10 g of NaCl is dissolved in 106 g of the solution. Its concentration is ____________.
On adding a solute to a solvent having vapour pressure 0.80 atm, vapour pressure reduces to 0.60 atm. Mole fraction of solute is:
2.5 litres of NaCl solution contain 5 moles of the solute. What is the molarity?
200 ml of water is added to 500 ml of 0.2 M solution. What is the molarity of this diluted solution?
How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0M HNO3? The concentrated acid is 70% HNO3:
For preparing 0.1 N solution of a compound from its impure sample of which the percentage purity is known, the weight of the substance required will be:
A solution made by dissolving 40 g NaOH in 1000 g of water is ____________.
Which of the following concentration terms is/are independent of temperature?
Which of the following units is useful in relating concentration of solution with its vapour pressure?
Define the following modes of expressing the concentration of a solution. Which of these modes are independent of temperature and why?
x (mole fraction)
What is molarity of resulting solution obtained by mixing 8.5 L of 0.5 m urea solution and 500 ml of 2 m urea solution?
The molarity of the solution prepared by dissolving 6.3 g of oxalic acid (H2C2O4 · 2 H2O) in 250 mL of water in mol L-1 is x × 10-2. The value of x is ______. (Nearest integer)
[Atomic mass: H : 1.0, C : 12.0, O : 16.0]
The mole fraction of a solute in a 100 molal aqueous solution is ______ × 10-2. (Round off to the Nearest Integer).
[Given :Atomic masses : H : 1.0 u, O : 16.0 u]
