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Masja [62]
3 years ago
15

Which reactant is limiting?Show work

Chemistry
1 answer:
fenix001 [56]3 years ago
5 0

Answer:

  • 1. Iodine is the limiting reactant

  • 2. 6molAlI_3

Explanation:

<u>1. Balanced chemcial equation:</u>

      2Al+3I_2\rightarrow 2AlI_3

<u>2. Theoretical mole ratio</u>

It is the ratio of the coefficients of the reactants in the balanced chemical equation:

           \dfrac{2molAl}{3molI_2}

<u>3. Actual ratio</u>

<u />

It is ratio of the moles available to reat:

       \dfrac{9molAl}{9molI_2}

<u>4. Comparison</u>

            \dfrac{9molAl}{9molI_2}>\dfrac{2molAl}{3molI_2}

Then, there are more aluminum available than what is needed to react with the 9 moles of iodine, meaning that the aluminum is in excess and the iodine will react completely, being the latter the limiting reactant.

Conclusion: iodine is the limiting reactant.

<u>5. How much aluminum iodide will be produced?</u>

Use the theoretical mole ratio of aluminum iodide to iodide:

       \dfrac{2molAlI_3}{3molI_2}\times 9molI_2=6molAlI_3\leftarrow answer

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Answer:

1. a chemical reaction in which one substance breaks up into two or more new substances:  decomposition reaction

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4. chemical compound formed when the negative ions from an acid combine with the positive ions of a base: salt

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5. A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

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6. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: Zn+2HCl\rightarrow ZnCl_2+H_2

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