What are the units of mass percentage of the solution?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The units of mass percentage of a solution are dimensionless since mass percent is expressed as a percentage (%), specifically as "% mass/mass" or "% w/w".

Mass percentage (% w/w or % m/m): This is calculated as:
Mass percentage=mass of solute (g) / mass of solution (g)×100
The mass of solute and solution are both measured in grams (g), so the units cancel in the ratio, leaving only the final unit as a percent (%).
Typical notation: The answer is reported as a percentage (%) with the format "% w/w" indicating weight of solute per weight of solution.

For example, a solution labeled "5% w/w NaCl" means there are 5 grams of NaCl per 100 grams of solution, with mass calculated in grams but the final unit being percent (%).

Watch 3-min video & get full concept clarity