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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: yoyohs on November 12, 2021, 09:45:29 PM

Title: Equilibrium Question With Gases
Post by: yoyohs on November 12, 2021, 09:45:29 PM
Consider the following equilibrium at 400 K.

H2 (g) + I2 (g) ⇌ 2HI with K = 6.

If initially 4.0 bar of HI is placed in a 2.4 L vessel, what is the total pressure at equilibrium?
Title: Re: Equilibrium Question With Gases
Post by: sjb on November 13, 2021, 02:04:29 AM
What have you tried? You might want to consider putting the phase of the hydrogen iodide in.
Title: Re: Equilibrium Question With Gases
Post by: yoyohs on November 13, 2021, 08:14:59 AM
What have you tried? You might want to consider putting the phase of the hydrogen iodide in.
the phase wasn't given in the question.
Title: Re: Equilibrium Question With Gases
Post by: Meter on November 13, 2021, 11:39:14 AM
What have you tried? You might want to consider putting the phase of the hydrogen iodide in.
the phase wasn't given in the question.
Look up the BP data for hydrogen iodide and try to infer what phase it would be in at T = 400 K (much above RT).
Title: Re: Equilibrium Question With Gases
Post by: billnotgatez on November 13, 2021, 12:16:31 PM
Just a FYI  to aid in the discussion
Extract From WIKI
Hydrogen iodide
Properties
Chemical formula   HI
Molar mass   127.904 g/mol
Appearance   Colorless gas
Density   2.85 g/mL (-47 °C)
Melting point   −50.80 °C (−59.44 °F; 222.35 K)
Boiling point   −35.36 °C (−31.65 °F; 237.79 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).