Write the balanced chemical equation for the reaction of the weak acid HCN with water. Include the phase of each species.
The balanced chemical equation for the reaction of the weak acid HCN (hydrogen cyanide) with water can be represented as:
HCN (aq) + H2O (l) ⇌ H3O+ (aq) + CN- (aq)
In this equation, (aq) represents an aqueous solution, which means the species is dissolved in water, and (l) represents liquid water.
To write the balanced chemical equation for the reaction of the weak acid HCN with water, we first need to know the chemical formulas of the reactants and products.
The chemical formula for the weak acid HCN is HCN, and the chemical formula for water is H2O.
The reaction between HCN and water can be represented as follows:
HCN + H2O -> H3O+ + CN-
In this reaction, an HCN molecule reacts with a water molecule to form a hydronium ion (H3O+) and a cyanide ion (CN-).
Note that HCN, H3O+, and CN- are all in aqueous phase (dissolved in water), so we indicate their phases as (aq). Meanwhile, water (H2O) remains in liquid phase (l).
The balanced equation for this reaction is:
HCN (aq) + H2O (l) -> H3O+ (aq) + CN- (aq)