A tank contains 50 liters of a salt solution with 10% salt. How many liters of pure water must be added to reduce the concentration to 5%? - Treasure Valley Movers

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How to Dilute a Salt Solution from 10% to 5%: A Practical, Safe Explanation
A tank contains 50 liters of a salt solution with 10% salt. How many liters of pure water must be added to reduce the concentration to 5%? Many people explore this question while researching homewater purification, saltwater chemistry, or industrial process optimization—especially with rising interest in sustainable resource management. This simple dilution challenge plays out far beyond a tank: from household cooking to industrial cooling systems, understanding how dilution affects concentration supports informed decisions across many contexts.

Why is this question gaining attention in the US today? The growing focus on water conservation and supply management—driven by drought conditions, aging infrastructure, and climate uncertainty—naturally leads users to seek clear answers. The math behind dilution is straightforward yet powerful: adding pure water lowers salt concentration proportionally, offering a tangible way to adjust solution strength safely.

To solve: start with 50 liters of a 10% salt solution. That means the tank holds 5 liters of pure salt (10% of 50 liters). Let x be the liters of pure water added. The total volume becomes 50 + x liters, and total salt remains 5 liters. To reach 5% concentration:
5 ÷ (50 + x) = 0.05
Solving gives x = 50 liters. So, adding 50 liters of pure water reduces the solution concentration from 10% to 5%. This formula applies universally—whether adjusting outdoor pool water or managing industrial process streams.

Still, users often wonder about practical realities. Adding pure water doesn’t change salt ion count, only dilution—so consistency matters in applications requiring precise concentration. Yet in home or small-scale use, this ratio offers reliable, low-risk results. No specialized machinery needed.

Common misconceptions include assuming higher water volume reduces salt mass or misunderstanding that dilution changes salinity without proportionally lowering salt content. The amounts involved matter: adding too little water won’t reach 5%, while too much risks dilution beyond intended use. Always recalculate