Volume of Gasses Obtained by Electrolysis of Salt Solution

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SUMMARY

The discussion focuses on calculating the volume of gases produced by the electrolysis of a sodium nitrate (NaNO3) solution, specifically when the mass fraction changes from 40% to 60%. Participants emphasize the necessity of knowing the initial amount of the solution to derive an accurate calculation. The textbook answer provided indicates a total gas volume of 169.2 dm³, but contributors assert that this cannot be determined solely from the given information without additional data on the initial solution mass.

PREREQUISITES
  • Understanding of electrolysis principles
  • Knowledge of gas laws and calculations
  • Familiarity with sodium nitrate (NaNO3) properties
  • Basic skills in stoichiometry
NEXT STEPS
  • Research the electrolysis of sodium nitrate solutions
  • Learn about gas volume calculations under varying pressure and temperature conditions
  • Study stoichiometric relationships in electrolysis reactions
  • Explore methods for determining mass fractions in solutions
USEFUL FOR

Chemistry students, chemical engineers, and anyone involved in electrolysis or gas production processes will benefit from this discussion.

CroSinus
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Please post this type of questions in HW section using the template and showing your work.
Hello everybody!How can I calculate the volume of gasses produced by electrolysis of an aqueous solution of NaNO3 if the mass fraction of the salt changed from 40% to 60% (before electrolysis the mass fraction of the salt was 40% and after electrolysis it changed to 60%)? Pressure and temperature are 20 ºC and 99,8 kPa.Can you help me with my problem, please!

CroSinus
 
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Not enough information to solve the problem - you need to know what was the initial amount of the solution.

You can at best give the answer in terms of "volume of gas produced per kg of electrolyzed mixture".

Try to assume you started with 1 kg of mixture - does it help?
 
Thank you very much Borek for trying to help me.
The answer from my textbook says: V(O2) + V(H2) = 169,2 dm3
 
As I said - no way of getting this answer from the information you gave in this thread.
 

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