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Electric current splits water

2 H2O -> 2 H2 + O2. Gas collects at both electrodes, with twice the hydrogen volume.

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Reaction calculator

Scale this equation

Enter any molar amount; the balanced ratio calculates the theoretical product.

H21 mol
Output
Product and observation diagram for Electric current splits water
Gas collects at both electrodes, with twice the hydrogen volume.
H21 mol

Theoretical amount for 1 mol of H2O

Electrolysis blue #BAE6FD
Input
Reactant diagram for Electric current splits water
H2O enters under direct current and electrolyte
H2O1 mol

direct current and electrolyte

Relationship

What connects the input and output?

Electrical energy drives a non-spontaneous redox process at two electrodes. Use the calculator to scale the balanced molar relationship to any amount of H2O.

Sources

3
  1. OpenStax Chemistry 2e: Writing and Balancing Chemical EquationsOpenStaxCC BY 4.0
  2. OpenStax Chemistry 2e: Classifying Chemical ReactionsOpenStaxCC BY 4.0
  3. NIST Chemistry WebBook, SRD 69National Institute of Standards and Technology

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