Answer to Question #139389 in General Chemistry for Zeus Santos

Question

What is the mass percent of solute when 4.12 g is dissolved in 100.0 g of water?

Answer 1

Let's address the question for both percent concentration by mass and for percent concentration by volume.

Percent concentration by mass is defined as the mass of solute divided by the total mass of the solution and multiplied by 100%. So, C%=m_solute/m_solution⋅100%

, where

m_solution=m_solvent+m_solute

• Our concentration by mass will be

c%=4.12g/(4.12g+100.0g) *100%

=3.95%

Hence the mass percent of the solute is 3.95%