Question

a solution is prepared by a 2gm of a substanses A to 18gm of water. calculate the mass percentage of solute?​

Answer 1

Answer:

Complete step by step answer:

Given,

The mass of substance A is 2g.

The mass of water is 18 g.

Here, the substance is the solute and water is the solvent. The substance is dissolved in water to form the solution.

In the given question, it is said that we need to find out the mass percent of the solute. The mass percent of the solute is defined as the mass of solute divided by the mass of solute plus mass of the solvent (mass of solution) multiplied by 100.

The formula for calculating the mass percent is shown below.

M%=MsMT×100M%=MsMT×100

Where,

M% is the mass percent of solute.

MSMS is mass of solute

MTMT is the mass of solute and solvent (Total mass of solution)

To find out the mass % of the solute, substitute the given values in the above equation.

⇒M%=2g2g+18g×100⇒M%=2g2g+18g×100

⇒M%=2g20g×100⇒M%=2g20g×100

⇒M%=0.1g×100⇒M%=0.1g×100

⇒M%=10%⇒M%=10%

Therefore, the mass percentage or M% of the solute is 10%.