Can Strong Acids or Bases Have Negative pH Values in Practice?

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SUMMARY

Strong acids and bases can indeed have negative pH values in practice, as demonstrated by superacids like 10M HCl, which has a pH of -1. This phenomenon is not merely theoretical; it occurs under specific conditions. While Ostwald's dilution principle suggests that pH typically ranges from 0 to 14 for most solutions, this law does not apply to extremely concentrated solutions, where deviations can occur.

PREREQUISITES
  • Understanding of pH scale and its implications
  • Familiarity with strong acids and bases, particularly HCl
  • Knowledge of Ostwald's dilution principle
  • Concept of superacids and their properties
NEXT STEPS
  • Research the properties and examples of superacids
  • Study the implications of Ostwald's dilution principle in various concentrations
  • Explore the behavior of pH in concentrated solutions
  • Investigate the practical applications of negative pH values in chemistry
USEFUL FOR

Chemists, chemical engineers, and students studying acid-base chemistry will benefit from this discussion, particularly those interested in the behavior of strong acids and the limits of pH measurement.

MaximumTaco
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Is it really possible to have strong acid/bases with a negative pH in practice, or is it purely theoretical. Like we say 10M HCl has pH = -1, does it really?

Is there something that limits the range of possible pH values for a solution?
 
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Yes it is possible and does happen, just browse yahoo and look up "superacids", you can easily have a negative pH of -1. And there are NO limits for a pH value.

Wolfson.
 
There is a law called Ostwald's dilution principle, and it states that pH is within 0 and 14 for solutions obeying this law. The response for pH with respect to concentration is somewhat deviated in very dilute and concentrated solutions.
 

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