Coulometric Titration Calculator

Precise Electrochemical Analysis

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Charge Calculator

Calculate total charge from current and time data.

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Moles Calculator

Calculate moles of analyte from charge data.

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Concentration Calculator

Calculate concentration from moles and volume.

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Understanding Coulometric Titration

Basic Principles

Key concepts include:

  • Faraday's laws of electrolysis
  • Charge-concentration relationship
  • Current efficiency
  • Endpoint detection
  • Background correction

Types of Coulometry

Two main methods:

  • Controlled Potential:
    • Fixed potential electrolysis
    • Selective determination
  • Controlled Current:
    • Constant current electrolysis
    • Time-based measurements

Important Considerations

For accurate results:

  • 100% current efficiency
  • Complete electrolysis
  • No side reactions
  • Proper cell design
  • Temperature control

Applications

Common uses include:

  • Trace analysis
  • Water content determination
  • Electroplating control
  • Quality assurance
  • Research applications

Essential Coulometric Formulas

Charge Calculation

Q = I × t

Where:

Q = Charge (coulombs)

I = Current (amperes)

t = Time (seconds)

Moles Calculation

n = Q / (n × F)

Where:

n = Number of moles

F = Faraday constant

n = Number of electrons

Concentration

M = n / V

Where:

M = Molarity (mol/L)

n = Number of moles

V = Volume (L)