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Na2O + CO2 is the reaction that makes Na2CO3

The question is incomplete, here is the complete question:

Sodium carbonate [tex](Na_2CO_3)[/tex] 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.

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.

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

[tex]H_2CO_3+2NaOH\rightarrow Na_2CO_3+2H_2O[/tex]

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

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