Chemistry Question: Pressure Change at Different Temperatures

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Discussion Overview

The discussion centers around a chemistry problem involving the pressure change of a hydrogen gas cylinder when subjected to a temperature change from 25° C to 7° C. Participants explore relevant gas laws and seek guidance on the appropriate equations to use for the calculation.

Discussion Character

  • Homework-related
  • Technical explanation

Main Points Raised

  • One participant presents a scenario involving a hydrogen cylinder at 3.67 atm and asks for help calculating the pressure change due to a temperature drop.
  • Another participant prompts the original poster to consider which gas laws they are familiar with.
  • A third participant lists several gas laws, including Charles's Law, Boyle's Law, the combined gas law, and the ideal gas law, as potential tools for solving the problem.
  • Another response suggests creating a list of known values related to the problem, including measurements of volume, mass, pressure, and temperature, to determine which equations might be applicable.

Areas of Agreement / Disagreement

There is no consensus yet, as participants are still exploring the problem and discussing potential approaches without resolving the calculation or agreeing on a specific method.

Contextual Notes

Participants have not yet established all necessary assumptions or clarified the dependencies on specific definitions of the gas laws mentioned.

Who May Find This Useful

Students studying gas laws in chemistry, individuals seeking help with pressure-temperature relationships, and those interested in practical applications of gas laws in laboratory settings.

hemihead_dave
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A hydrogen cylinder holds gas at 3.67 atm in a laboratory where the temperature is 25° C. To what will the pressure change when the cylinder is placed in a showroom where the temperature drops to 7° C?

I am having trouble calculating this question. Unsure what equation I need to use. Can anyone help?
 
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What gas laws do you know?

You should use post template, now I have to ask questions that you should answer in your first post.
 
I know Charles law, Boyle's Law, the combined gas law and the ideal gas law PV=nRT
 
Begin by listing all of your known values. Just a straight forward before and after listfor each type of measurment (volumes, mass, pressure, temperatures, etc etc) that is given.
Then take a look at those formulas and see which equations utilize those types of values.
 

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