Losing my mind over Stoichiometry

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SUMMARY

The forum discussion focuses on the challenges of understanding stoichiometry in a General Chemistry context, specifically involving the reaction of silver nitrate (AgNO3) and copper (Cu) to produce silver (Ag) and copper(II) nitrate (Cu(NO3)2). The user provided a specific reaction equation and expressed confusion about how to apply stoichiometric principles. Key steps include calculating the formula weights of reactants and products, ensuring the reaction is balanced, and using half-reactions to account for electron transfer. The user reported obtaining 1.33g of silver from the reaction, indicating a need for clarity on how to incorporate this into stoichiometric calculations.

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  • Understanding of chemical equations and balancing reactions
  • Knowledge of molar mass calculations
  • Familiarity with half-reactions in redox chemistry
  • Basic grasp of stoichiometric principles
NEXT STEPS
  • Learn how to calculate molar masses of compounds
  • Study the method for balancing chemical equations
  • Explore the concept of half-reactions in electrochemistry
  • Practice stoichiometric calculations using various chemical reactions
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This discussion is beneficial for students in General Chemistry, particularly those struggling with stoichiometry, as well as educators seeking to clarify these concepts for their students.

hubbmatt
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Alright, here we go... First off I just want to warn you all that I'm very bad @ math, so this might take a little explanation. I'm currently in a Gen Chem class and can't get a grasp on this Stoichiometry stuff. One of the ?'s I'm looking at is this:

1.2g AgNO3 + 0.5g Cu + 100ml H2O ---> Ag + Cu(NO3)2 + H2O

Now, assuming I'm correct on my equation, how do I even start the "Stoichiometry" process? I got 1.33g Ag out of the reaction, do I put that into the equation? Please help me. Thank You
 
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You start by finding formula weights of each reactant and product. You also must check that your reaction is balanced. Your stoichiometry then is the result. According to how you wrote the unrefined reaction, Ag(0) ------> e + Ag+ and Cu+2 +2e -------> Cu(0).
You will need to balance these two half reactions through the electrons. This will affect how you write the overall reaction.
 

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