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Why must chemical equations be balanced?

  1. Mar 5, 2015 #1
    1. The problem statement, all variables and given/known data
    Why must chemical equations be balanced (check all that apply).

    (a) In a balanced chemical equation, the coefficients in front of each reactant and product allow us to predict how much reactants are required to form a given amount of products.

    (b) In a balanced chemical equation, the coefficients in front of each reactant and product allow us to predict whether the given reaction is possible or not.

    (c) In a balanced chemical equation, the coefficients in front of each reactant and product allow us to predict whether the reaction requires a catalyst or not.

    (d) In a balanced chemical equation, the coefficients in front of each reactant and product allow us to predict the amount of product that can form from a given amount of reactant.

    (e) In a balanced chemical equation, the coefficients in front of each reactant and product allow us to predict how much of one reactant is required to react with a given amount of another.

    2. Relevant equations


    3. The attempt at a solution
    I chose everything except for c, but it is wrong. All the other ones seem correct to me and I don't see how a balanced equation can tell you anything about a catalyst, so I'm assuming one of the ones I chose is incorrect, but I'm not sure which one(s).
     
  2. jcsd
  3. Mar 5, 2015 #2

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    And, there is an incorrect answer in there, so, let's take 'em one at a time.
    "A?" And your reasoning.
     
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