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Formula For Strong Acid:
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This calculation determines the concentration of a strong acid solution from its pH value using the formula C = 10-pH. This relationship is fundamental in acid-base chemistry for strong acids that completely dissociate in water.
The calculator uses the formula:
Where:
Explanation: For strong acids that completely dissociate, the hydrogen ion concentration [H⁺] equals the acid concentration, and pH = -log[H⁺], so [H⁺] = 10-pH.
Details: Calculating acid concentration from pH is essential in analytical chemistry, quality control, environmental monitoring, and various industrial processes where acid strength needs to be determined quickly and accurately.
Tips: Enter the pH value (between 0-14). The calculator will compute the corresponding acid concentration in mol/L. This calculation is valid only for strong acids.
Q1: Why is this formula only for strong acids?
A: Strong acids completely dissociate, so [H⁺] equals the initial acid concentration. Weak acids only partially dissociate, requiring different calculations.
Q2: What are typical pH values for common acids?
A: pH 0-1 for concentrated strong acids, pH 1-3 for dilute strong acids, and higher pH values for weaker acids or very dilute solutions.
Q3: How accurate is this calculation?
A: The calculation is mathematically exact for ideal strong acid solutions. Real-world accuracy depends on measurement precision of pH and solution ideality.
Q4: Can this be used for bases?
A: No, this formula is specific for acids. For strong bases, you would use pOH and the relationship [OH⁻] = 10-pOH.
Q5: What about temperature effects?
A: The pH scale is temperature-dependent, but for most practical purposes at room temperature, this calculation provides sufficiently accurate results.