Sun, 03 May 2026 11:17:35 +0000

A chemist has a solution that is 30% acid and another that is 70% acid. If she mixes 5 liters of the 30% solution with 3 liters of the 70% solution, what is the concentration of acid in the resulting mixture?
This scenario reflects a fundamental principle in chemistry: mixing solutions changes both volume and concentration, offering insight into how dilution and blending work in real-world applications. With growing interest in precision mixing—from home science experiments to professional laboratory work—understanding basic concentration calculations has become both practical and relevant. Today, curiosity about chemical mixtures is increasing across the U.S. Whether stemming from DIY home projects, educational exploration, or professional safety standards, mixing solutions like these is more than a classroom exercise—it reflects a broader public engagement with chemistry’s role in daily life. A 30% acid solution means 30% of its volume is pure acid, while a 70% solution holds 70% acid. The chemist’s choice—5 liters of mild acid and 3 liters of concentrated acid—creates a blend where neither solution dominates evenly, highlighting how volume ratios directly affect final concentration. ### How to Calculate the Final Acid Concentration