HCN + H2O = CNO + H3O

Balanced Chemical Equation – Solution

HCN + 4H2O → CNO + 3H3O

The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. New substances are formed as a result of the rearrangement of the original atoms. As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged – this follows from the law of conservation of mass of substances.

Chemical Reaction Information

This is an oxidation-reduction (redox) reaction. H2O is an oxidizing agent.

3 O-II + 3 e  3 O-III (reduction)

Reaction Type

Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.



  • Other names: Hydrogen cyanide.
  • Appearance: Colorless liquid or gas.

H2O – Water, oxidane

  • Other names: Oil of vitriolSulfuric acid, concentrated (> 51% and < 100%).
  • Appearance: Clear, colorless liquid; Colorless to dark-brown, oily, odorless liquid; Odourless colourless oily hygroscopic liquid.



  • Names: Nitridooxidocarbon.


Similar Examples of Equalizing a Chemical Reaction
HCN + H2O + H2SO4 = HCOOH + (NH4)2SO4
CNO + H3O = CO2 + H2O + NH4
HCN + H2O = (CH3)3COOC(CH3)3 + NH3 + O2
HCN + H2O = (CH3)3COOC(CH3)3 + HN3 + O
HCN + H2O + H2 = NO + CH4
HCN + H2O = C5H5N5O + H2
HCN + H2O = CH2O2 + NH3

Alexander Stephenson

Candidate of Chemical Sciences, editor-in-chief of Guide-scientific.com. Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles.

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