Question

A solution is prepared by dissolving 10 g of common salt In 90 g of water calculate the mass percentage of each solution

Answer 1

Explanation:

total mass of solution =10+90 = 100 g

mass % of salt = 10/100 * 100 = 10%

mass % of water = 90/100 * 100 = 90%

Answer 2

Answer:

Mass% of NaCl=10%

Mass% of water=90%

Explanation:

The mass percentage represents the concentration of a particular element in a compound or in a mixture. It is represented as the mass of the particular component divided by the total mass of the mixture.

Here, A solution of NaCl is prepared by adding 10g of NaCl in 90g of water.

$Mass\ percentage=Mass\ of\ solute/Mass\ of\ solution \times 100$

Given:

Mass of common salt (solute)=10g

Mass of solvent(water)=90g

To find-  Mass percentage of each solute and solvent in the solution.

Mass of NaCl=10g

Mass of water=90g

Mass of solution=90+10=100g

$Mass\ percentage\ of\ NaCl=10/(90+10)\times 100=10\\\\Mass\ percentage\ of\ water=90/(90+10)\times 100=90$

Therefore,

Mass% of NaCl=10%

Mass% of water=90%