Solving pH with [H+] = 1 * 10^-5 mol/L

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SUMMARY

The discussion centers on calculating pH from hydrogen ion concentration, specifically using the formula pH = -log[H+]. Given a concentration of [H+] = 1 * 10^-5 mol/L, the pH is calculated as 5. The relationship between [H+] and [OH-] is also highlighted, noting that their product equals 10^-14, which is fundamental to understanding the logarithmic pH scale that typically ranges from 0 to 14, although negative pH values can occur with high concentrations.

PREREQUISITES
  • Understanding of logarithmic functions
  • Familiarity with the concept of molarity
  • Knowledge of the pH scale and its significance
  • Basic principles of acid-base chemistry
NEXT STEPS
  • Study the derivation of the pH scale and its logarithmic nature
  • Learn about the relationship between pH, [H+], and [OH-] concentrations
  • Explore strong vs. weak acids and their impact on pH
  • Investigate the implications of negative pH values in chemistry
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Chemistry students, educators, and professionals in scientific fields who require a solid understanding of acid-base chemistry and pH calculations.

WingZero
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Help me with ph

pH = -log[H+]

Express the following concentrations in terms of pH.

[H+] = 1 * 10^-5 mol/L
 
Last edited:
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It's right in front of you. You have the molar concentration for [H+], now just plut it into the equation.

-log(10^-5) = pH = 5

Remember: [OH-][H+] = 10^-14

You will probably need this later on. This is where the lograrithmic pH scale comes from and why it "supposedly" goes from 0-14, although you can have negative pH's with strong enough concentrations.

Now maybe you can solve my problem in the thread "balance the equation"! heh
 

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