bar conversion

[nshahwan 1L]

Could someone more clearly explain how to change the units to bar? Example 5I.1 show it but it is not very clear and I am confused

[Isha_Maniyar_Dis2E]

The conversion of bar to atm will be given in the formula handout we are given in each test. It is mainly a difference in values of R. If you are given values in bar, use the value for R involving bar, and then convert to atm using the formula sheet.

[Justin Sarquiz 2F]

The formula sheet should say how to convert from atm to bar or bar to torr, so you should not worry too much about that.

[Julie Park 1G]

In example 5I.1, they want you convert the partial pressures PH2 and PCl2 from mPa (which is given) to bar.

Partial pressure of H2 = 4.2 mPa and Cl2 = 8.3 mPa
It's also given that 1 bar = 10^5 Pa
However, we are given partial pressures in mPa. Knowing that there are 1000 mPa in 1 Pa, you can convert 4.2 mPa and 8.3 mPa to 4.2x10^-3 Pa and 8.3x10^-3 Pa.

Now that you know the Pa, you can convert the units to bar.

[nshahwan 1L]

I noticed this on the formula sheet thank you for letting me know!

[Manav Govil 1B]

Also, if you are given the concentration and need to convert into bar, torr, etc., you would use the PV = nRT equation with the corresponding R.