Question

How do you write a net ionic equation for the reaction of aqueous hydrocyanic acid and aqueous sodium hydroxide?

Answer 1

Weak acid + strong base gives water and a salt.

Explanation:

`H-C-=N(aq) + NaOH(aq) rarr NaC-=N(aq) + H_2O(l)`

Since we were axed for a net ionic equation, we could remove the `Na^+` ion, which, after all, was along for the ride:

`H-C-=N(aq) + ""^(-)OH(aq) rarr ""^(-)C-=N(aq) + H_2O(l)`

Are these equations balanced with respect to mass and charge?

Can you give the equivalent reaction between phosphoric acid, `H_3PO_4` and 1 equiv of sodium hydroxide?