Calculating Hydrogen Ion Concentration & PH by Yonderboy98

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SUMMARY

The discussion focuses on calculating hydrogen ion concentration and pH values using the formulas [H+] = 10^-pH and pH = -log([H+]). Users inquire about specific examples, including how to determine hydrogen ion concentration for pH values of 3.5 and 7.2, as well as how to calculate pH for hydrogen ion concentrations of 2.8 x 10^-15 and 3.6 x 10^-9. The calculations involve logarithmic functions and the properties of exponents, which are essential for accurate results.

PREREQUISITES
  • Understanding of logarithmic functions
  • Familiarity with the concept of pH
  • Knowledge of hydrogen ion concentration
  • Basic skills in mathematical calculations involving exponents
NEXT STEPS
  • Study the application of the formula [H+] = 10^-pH in various scenarios
  • Explore logarithmic properties and their implications in chemistry
  • Learn about the significance of pH in biological and chemical systems
  • Investigate the relationship between pH and acidity in solutions
USEFUL FOR

Chemistry students, educators, and professionals involved in laboratory work or environmental science who need to understand pH calculations and hydrogen ion concentration.

Yonderboy98
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I know what the formal definition of ph is, and I am comfortable with logarithms, anti-logs, and the laws of exponents. Still, I get confused doing actual calculations and would greatly appreciate your input on the following:
Suppose something has a ph of 3.5-How do you calculate the hydrogen ion concentration?
Suppose something has a ph of 7.2- How do you calculate the hysdrogen ion concentration?
Suppose that something has a hydrogen ion concentration of 2.8 times ten to the minus 15-How do you calculate its ph?
Suppose that something has a hydrogen ion concentration of 3.6 times ten to the minus 9-How do you calculate its ph? Yonderboy98
 
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[H+] = 10-pH
pH = -log([H+])

That's all.
 

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