If 2 moles Na2CO3 react completely, how many moles NaCl are produced?

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Multiple Choice

If 2 moles Na2CO3 react completely, how many moles NaCl are produced?

Explanation:
The important idea is using the mole ratio from a balanced equation. For the reaction of sodium carbonate with acid, the balanced equation shows a 1:2 ratio between Na2CO3 and NaCl: one mole of Na2CO3 produces two moles of NaCl. If you have 2 moles of Na2CO3 reacting, you multiply the NaCl amount by 2, giving 4 moles of NaCl. This assumes the reaction goes to completion with enough acid.

The important idea is using the mole ratio from a balanced equation. For the reaction of sodium carbonate with acid, the balanced equation shows a 1:2 ratio between Na2CO3 and NaCl: one mole of Na2CO3 produces two moles of NaCl. If you have 2 moles of Na2CO3 reacting, you multiply the NaCl amount by 2, giving 4 moles of NaCl. This assumes the reaction goes to completion with enough acid.

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