Find K for 2A = B + 3C Reaction in a 1 L Container

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Discussion Overview

The discussion revolves around a chemical reaction represented by the equation 2A = B + 3C, focusing on calculating the equilibrium constant K based on the initial and final moles of reactants and products in a 1 L container.

Discussion Character

  • Homework-related

Main Points Raised

  • One participant states the initial amounts of substances: 0.5 moles of A, 1 mole of B, and 2 moles of C, and notes the final amount of A is 0.6 moles.
  • Another participant asks how many moles of A have been formed and how to determine the moles of B and C used based on this information.
  • A third participant calculates that 0.1 moles of A have been formed, based on the change from 0.5 moles to 0.6 moles.
  • A later reply challenges the previous calculation, suggesting that the participant should consider the stoichiometry of the reaction to find the corresponding changes in moles of B and C.

Areas of Agreement / Disagreement

Participants do not appear to reach consensus on the calculations regarding the formation of A and the corresponding changes in B and C, indicating a disagreement on the interpretation of the reaction stoichiometry.

Contextual Notes

Participants have not fully resolved the relationships between the moles of A formed and the moles of B and C consumed, leaving some assumptions and calculations unaddressed.

nhrock3
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we mix 0.5 moles of A
1 mole of B
2 moles of C
in a one litter container

after it blances we find 0.6 moles of A
find K for
=(is a sign where two arrows go in different directions)
2A =B+3c
 
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1. How many moles of A have been formed?
2. How can you use this to find how many moles of B and C have been used?
 
1. 0.6 moles
2.
(0.5/1 +1/1+2/1)=output
 
1. No, you are mistaken. You started with 0.5 moles and ended up with 0.6 moles. 0.1 moles have been formed.

2. Look at the reaction. How many moles of B or C correspond to 1 mole of A? Then use this information and find the concentrations of B and C.
 

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