Hydrochloric acid and sodium hydroxide.
Sodium selenite is a salt formed by the combination of sodium hydroxide (a base) and selenous acid (an acid). Overall, it is considered to be a neutral compound.
NaCl is a salt formed by combination of a strong acid and a strong base, so it can't be put in simple acid or base category.
The combination of the cation of a base and the anion of an acid forms a compound called a salt. This is the result of an acid-base reaction in chemistry. For example, hydrochloric acid and sodium hydroxide react to form the salt sodium chloride and water.
Sodium Carbonate is a base.
Sodium bicarbonate is a base.
Sodium bicarbonate is a base.
Sodium hydroxide is a base.
Sodium oxalate is a salt formed from the neutralization reaction between oxalic acid (a weak organic acid) and sodium hydroxide (a strong base). Therefore, sodium oxalate is neither an acid nor a base; it is a salt.
Base
Sodium bicarbonate is a weak base.
The neutralization of citric acid and sodium hydroxide is an acid-base reaction. Citric acid, being an acid, reacts with sodium hydroxide, a base, to form water and a salt (sodium citrate), resulting in a neutral pH solution.
base