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Davis1402go
Answered

Sodium chloride and calcium carbonate combine to form sodium carbonate and calcium chloride in the reversible reaction.

2NaCl + CaCO3 ⇌ Na2CO3 + CaCl2

Which statement about the reaction is necessarily correct?

1. The reaction will continue until the sodium chloride is used up.
2. The rate at which calcium chloride is equal to the rate at which sodium chloride is produced.
3. Both calcium carbonate and sodium carbonate are being produced.
4. The reaction is moving only from left to right.

Answer :

Mia478079go

Answer:

I think is Number 2

The rate at which calcium chloride is equal to the rate at which sodium chloride is produced.

Let me know if I'm wrong.

The statement that is necessarily correct about the reaction is that both calcium carbonate and sodium carbonate are being produced

2NaCl + CaCO3 ⇌ Na2CO3 + CaCl2

The reaction above is a reversible reaction. A reversible reaction is a reaction in which the conversion of reactant to products and the conversion from product to reactant occurs simultaneously. This reaction is just like a back and forth reaction.

⇌ symbol represents a reversible reaction. Therefore, the statement that is necessarily correct about the reaction is that both calcium carbonate and sodium carbonate are being produced

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