Relation between charge and moles

The Relationship between Charge and Moles calculator computes the amount of charge based on the unit charge per molecule (n), number of moles (N) and the Faraday Constant.

INSTRUCTIONS: Choose units and enter the following:

• (n) Absolute value of charge on an ion.
• (N) Number of moles

Relationship Charge and Mole (q) : The calculator returns the charge in coulombs.  However this can be automatically converted to compatible units via the pull-down menu.
  

The Math / Science

The relation between charge and moles^[3] equation calculates the electric charge that is transferred to or from a sample  of a charged species (cations or anions).  This equation is used in electrochemistry specifically when trying to relate the coulombs required or generated during an electrochemical reaction. 

The Absolute Charge on an ion:

1. sodium ion (Na⁺) n = 1, 
2. chloride (C^-1) n=1, 
3. sulfate (SO4^-2) n=2

Description

The equation for charge based on the number of moles is¹

            q = n • N • F

where

• q is the electric charge
• n is the unit of charges per ion
• N is the number of moles
• F is faraday constant in units of (Coulombs per mole), which is 9.648 533 99(24) x10⁴ C/mol. See reference ².

Related Topics

• Relation between work and voltage (for the Spanish site click here)
• Ohm's Law (for the Spanish site click here)
• Relation between free energy difference and electric potential difference (for the Spanish site click here)

References

1.Harris, D., Quantitative Chemical Analysis, 9th Ed., W. H. Freeman,  Pp.307 (2015).

2.IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook.Last update: 2014-02-24; version: 2.3.3.DOI of this term: doi:10.1351/goldbook.F02325.

[3] For the Spanish site click here.