Answered

At Westonci.ca, we make it easy for you to get the answers you need from a community of knowledgeable individuals. Get immediate and reliable answers to your questions from a community of experienced professionals on our platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

If you have 6.0-g of lithium and you add it to excess manganese (IV) oxide, how many grams of the product Li2O do you form theoretically.
4Li + MnO2 ----> 2Li2O + Mn

Sagot :

CintiaSalazar

Taking into account the reaction stoichiometry, 12.857 grams of Li₂O are formed when 6 grams of Li reacts.

Reaction stoichiometry

In first place, the balanced reaction is:

4 Li + MnO₂  → 2 Li₂O + Mn

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • Li: 4 moles
  • MnO₂: 1 mole
  • Li₂O: 2 moles
  • Mn: 1 mole

The molar mass of the compounds is:

  • Li: 7 g/mole
  • MnO₂: 87 g/mole
  • Li₂O: 30 g/mole
  • Mn: 55 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

  • Li: 4 moles ×7 g/mole= 28 grams
  • MnO₂: 1 mole ×87 g/mole= 87 grams
  • Li₂O: 2 moles ×30 g/mole= 60 grams
  • Mn: 1 mole ×55 g/mole= 55 grams

Mass of Li₂O formed

The following rule of three can be applied: if by reaction stoichiometry 28 grams of Li form 60 grams of Li₂O, 6 grams of Li form how much mass of Li₂O?

[tex]mass of Li_{2} O=\frac{6 grams of Lix60 grams of Li_{2} O}{28 grams of Li}[/tex]

mass of Li₂O= 12.857 grams

Finally, 12.857 grams of Li₂O are formed when 6 grams of Li reacts.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Thank you for trusting Westonci.ca. Don't forget to revisit us for more accurate and insightful answers.