Chemistry Word Equations: Ca + Na -> Ca3Na2 | Balanced Equation Included

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Discussion Overview

The discussion revolves around writing and balancing chemical equations, specifically focusing on the reaction involving calcium and sodium. Participants are attempting to formulate both the word equation and the balanced chemical equation, while also addressing potential errors in the initial attempts.

Discussion Character

  • Homework-related
  • Debate/contested
  • Exploratory

Main Points Raised

  • One participant proposes the word equation as "Calcium + Sodium -> Tricalcium disodium" but expresses uncertainty about its correctness.
  • Another participant questions the validity of the term "Tricalcium disodium" and points out an imbalance in the number of calcium atoms between the reactants and products.
  • A suggestion is made to phrase the equation in terms of moles, indicating a more general approach to writing chemical equations.
  • There is a repeated inquiry about whether sodium should actually be nitrogen in the reaction, indicating confusion about the reactants.
  • A later reply confirms that the reaction involving calcium and oxygen is balanced as "2Ca + O2 -> 2CaO," suggesting a shift in focus to a different reaction.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the correct word equation or the balancing of the initial reaction. Confusion about the reactants persists, and multiple viewpoints are presented regarding the terminology and balancing of equations.

Contextual Notes

There are unresolved questions regarding the correct identification of reactants and the proper terminology for the compounds involved. The balancing of the initial equation remains unclear, with participants expressing differing opinions on the matter.

Who May Find This Useful

This discussion may be useful for students learning about chemical equations, particularly those struggling with writing and balancing them in a homework context.

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Homework Statement


Ok I am absolutely terrible at chemistry and a friend asked me to help her with this and she has no one else so i figured I would come here.

Write the word equation and balanced equation:

Ca(s) + Na2(g) -> Ca3Na2(s)

The Attempt at a Solution



Would the word equation just be Calcium + Sodium -> Tricalcium disodium? what about the balanced equation?

6Ca + 2Na2 -> Ca3Na2(s)

I have a feeling I'm doing this completely wrong lol.
 
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I'm not going to touch the "word equation." I wonder whether the compound is really called Tricalcium disodium...sounds funny.

You have 6 calcium atoms on the left hand side and only 3 on the right hand side. How is that balanced?
 
Perhaps something like "n moles of solid calcium plus ... yields ... " ?
 
You sure it is not nitrogen instead of sodium?

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That balances it.
 

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