Sodium benzoate is a salt of a weak acid (benzoic acid). In water, sodium benzoate hydrolyses to form a strong base (sodium hydroxide) and benzoinc acid. This is an equilibrium reaction. Benzoic acid being a weak acid is only partially ionized in water whilst sodium hydroxide is fully ionoized. The resultant solution is therefore alkaline since the concentration of hydroxyl ions is greater than the concentration of hydrogen ions. The addittion of hydrochloric acid results in an acid base reaction formating a salt (sodium chloride). Since the addition of hydrochloric acid removes the sodium hydroxide, it forces the equilibrium to the right forming more benzoic acid which is precipitated.
A solid forms
The products are sodium benzoate and ammonia gas.
Sodium carbonate react with hydrochloric acid !
It is added to protonate the sodium benzoate.
Sodium will react violently with dilute hydrochloric acid.
an acid will react easily with base, not with another acid (generally) so sulphuric acid reacts with sodium hydroxide (a base) and not with hydrochloric acid
The products are sodium benzoate and ammonia gas.
Sodium carbonate react with hydrochloric acid !
It is added to protonate the sodium benzoate.
Sodium chloride and hydrochloric acid doesn't react.
Sodium will react violently with dilute hydrochloric acid.
an acid will react easily with base, not with another acid (generally) so sulphuric acid reacts with sodium hydroxide (a base) and not with hydrochloric acid
when any carbonates react with hydrochloric acid will be i.e. sodium carbonate+hydrochloric acid =sodium chloride
Yes
Sodium benzoate (ionic) and water (covalent)
Sodium chloride doesn't react with hydrocholric acid.
Sodium hydrochloride
If Sodium hydroxide and Hydrochloric acid are combined they will react and produce water and Sodium chloride.NaOH + HCl = NaCl + H2O