Changing temperature of water to alter PH levels

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SUMMARY

Heating water to approximately 90°C does alter its pH level compared to water at room temperature. The pH change is particularly relevant for ultra-pure water, where the water ion product plays a significant role. However, in typical laboratory conditions, the pH dependence may vary due to impurities present in the water. Understanding these factors is crucial for accurate pH measurements in scientific experiments.

PREREQUISITES
  • Understanding of pH and its measurement
  • Knowledge of water ion product concepts
  • Familiarity with laboratory water purity standards
  • Basic principles of thermodynamics related to water
NEXT STEPS
  • Research the effects of temperature on pH in various water types
  • Study the water ion product and its implications for pH levels
  • Explore methods for purifying water in laboratory settings
  • Learn about thermodynamic principles affecting chemical equilibria
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Chemists, laboratory technicians, environmental scientists, and anyone involved in water quality analysis or pH measurement in scientific research.

Da Apprentice
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If water were is heated to aproximately 90C will the water at this temperature have a different PH level to water at room temperature?

Thanks,
 
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Water ion product.

That's for ultra pure water. "Water" that you deal with in normal lab is never as pure, so the dependence will be different.
 
Borek said:
Water ion product.

Thanks, is was exactly what i needed. o:)

(BTW - how do you get pictures on your profile?)
 
Da Apprentice said:
(BTW - how do you get pictures on your profile?)

It is a perk for contributors (and those that earned it in another way):

https://www.physicsforums.com/payments.php
 
Last edited by a moderator:
yeah, I don't think i'll be getting 10,000 posts anytime soon... Aussie Dollars high but i'll wait till I get more involved in the forums. Thanks anyways for the help, much appreciated.
 

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