Kelvin vs Celsius


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405318478
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Joined: Sat Jul 20, 2019 12:16 am

Kelvin vs Celsius

Postby 405318478 » Wed Feb 05, 2020 2:16 pm

How do I know when to convert to kelvin/celsius when solving problems? Is it safe to always use kelvin?

Sanjana Borle 2K
Posts: 111
Joined: Fri Aug 09, 2019 12:15 am

Re: Kelvin vs Celsius

Postby Sanjana Borle 2K » Wed Feb 05, 2020 2:20 pm

Usually for thermodynamics problems Kelvin is used, but for many equations it doesn't really matter because the difference in one degree of Kelvin is the same as that of Celsius.

605395381
Posts: 50
Joined: Mon Jun 17, 2019 7:24 am

Re: Kelvin vs Celsius

Postby 605395381 » Wed Feb 05, 2020 5:16 pm

It would depends on the problems, one of the best thing to do is check the units of a given constant in that problem.

Jasmine Kim 1L
Posts: 71
Joined: Fri Aug 02, 2019 12:16 am

Re: Kelvin vs Celsius

Postby Jasmine Kim 1L » Thu Feb 06, 2020 5:48 pm

It should be safe to always use Kelvin, since it is always the unit used in formulas. The temperature is sometimes given in Celsius, so you have to convert it, which is just adding 273.15

205405339
Posts: 77
Joined: Thu Jul 11, 2019 12:16 am

Re: Kelvin vs Celsius

Postby 205405339 » Thu Feb 06, 2020 7:01 pm

You always use Kelvin no matter what equation it is so if you are given celsius convert to kelvin

205291012
Posts: 50
Joined: Mon Nov 11, 2019 12:17 am

Re: Kelvin vs Celsius

Postby 205291012 » Thu Feb 06, 2020 10:10 pm

if it just delta T then change in celsius will be the same as change in kelvin. you can try it out.
But if for instance, you're using the ideal gas law PV = nRT then you have to use Kelvin.


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