Question

Sodium carbonate (Na2CO3) is formed from the reaction between _____.

Answer 1

Na2O + CO2 is the reaction that makes Na2CO3

Answer 2

The question is incomplete, here is the complete question:

Sodium carbonate
`(Na_2CO_3)` is formed from the reaction between

A: a weak acid and a strong base

B: a strong acid and a strong base

C: a strong acid and a weak base

D: a weak acid and a weak base​

Answer: The given salt is formed from the reaction between a weak acid and strong base.

Step-by-step explanation:

Salts are formed when an acid reacts with a base during a neutralization reaction.

• When a strong acid and a weak base reacts, it leads to the formation of acidic salt.
• When a strong base and weak acid reacts, it leads to the formation of basic salt.
• When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.

`Na_2CO_3` is a salt which is formed by the combination of
`H_2CO_3\text{ and }NaOH`. Carbonic acid is a weak acid and sodium hydroxide is a strong base. So, the given salt is a basic salt.

`H_2CO_3+2NaOH\rightarrow Na_2CO_3+2H_2O`

Hence, the given salt is formed from the reaction between a weak acid and strong base.