Kelvin or Celsius?

[Veronica Lu 2H]

when using PV=nRT is the temperature supposed to be celsius or kelvin?

[KSong_1J]

I think you use Kelvin because the gas constant R always has Kelvin in the denominator so they cancel out!

[Timmy Nguyen Dis 1I]

Use Kelvin

[Shrayes Raman]

Kelvin... The gas constant R is listed in Kelvin so Kelvin is used in equation.

[Alexis Robles 2k]

Whenever it is T alone, you should use kelvin but when it is deltaT, you can use Celcius or kelvin.

[Venus_Hagan 2L]

for the ideal gas equation use Kelvin but if you ever need the change in temperature it doesn't matter because both are scaled the same way

[gconcha]

Kelvins are always used when applying the ideal gas law

The reason this is done is because Kelvins are more mathematically accurate in terms of chemically applying the excited state of the molecules in a gas to your calculations. zero K is the same as zero energy in the molecules, and is therefore the same as zero movement of the molecules. This is more mathematically correct than -273.15^oC
If you really want, I'm sure you could look up values for the Ideal Gas Constant , but most are given in K because they're better for representing how the energy of the molecules affects the context.

[Rosa Munoz 2E]

Kelvin. it only doesn't matter if we are talking about change. If it is a capital T then it must be Kelvin

[Juana Abana 1G]

You would use kelvin.

[Aarushi Solanki 4F]

Kelvin, because the gas constant R is usually in terms of Kelvins.

[205405339]

temperature is always kelvin

[Jesse Anderson-Ramirez 3I]

Should use Kelvin so the units match the constant.

[Anish Natarajan 4G]

Technically it's all dependent on the value of R that you use, but in most cases you'll be given a value that incorporates Kelvin rather than Celsius

[Orrin Zhong 4G]

Temperature is always Kelvin in PV = nRT.

[AronCainBayot2K]

Kelvin because the ideal gas constant is in terms of Kelvin not celsius.

[CalvinTNguyen2D]

You will almost always be using Kelvin in equations and calculations; in terms of the gas constant, it is measured in Kelvin rather than Celsius.

[Celine 1F]

Definitely use Kelvin

[105311039]

you must use Kelvin because of the units in the gas constant R

[Sean Tran 2K]

Use Kelvin, as the gas constant R includes it.

[605395381]

kelvin, just make sure the units for R is the same

[AveryAgosto]

You should use Kelvin because R uses Kelvin.

[Esha Chawla 2E]

when using PV=nRT is the temperature supposed to be celsius or kelvin?

The units for R are L*atm/mol*K. Based on this information, we can determine that R should be in Kelvin.

In general, most chemical reactions use temperature in Kelvin.

[Aarushi Solanki 4F]

It's supposed to be in Kelvin. Generally, we use Kelvin, but it is okay to use Celsius in equations involving the "change of T" since the scaling is the same for Kelvin and Celsius.

[Gurmukhi Bevli 4G]

The temperature should be in kelvin.

[Brandi 2C]

Since the STP (standard temperature and pressure) and R constant are in units of Kelvin, you should be using Kelvin for your calculations. If the problem does ask for the answer in units of Celsius, just do the calculations in Kelvin and then convert to Celsius after completing the calculations so you don't mess up unit calculations.

[Madeline Phan 1E]

You use Kelvin since the units of R include Kelvin.

[Yailin Romo 4G]

Temperature is always in Kelvin, not Celsius.

[Owen-Koetters-4I]

kelvin

[Areli C 1L]

yup, as mentioned above, you would use Kelvin.

[Justin Quan 4I]

when using PV=nRT is the temperature supposed to be celsius or kelvin?

To add on, you use kelvin especially since the constant R is in kelvin, not celsius. However, if you use PV=nR∆T, the you may use either celsius or kelvin since the change in temperature would be the same.

[Alfred Barrion 2H]

You should use Kelvin since it matches with the gas constant R to cancel out.

[105335337]

You use Kelvin because you must match the units within the R (gas constant) which uses kelvin.

[pmokh14B]

kelvin because the gas constant is always in terms of kelvin.

[William Chan 1D]

Kelvin. If the reaction happened at below 0°C, then the subsequent equation would be negative, having some weird consequences (i.e., negative pressure, negative volume).

[Bryan Chen 1H]

it depends on the unit of the gas constant. if its .08206 Latm/Kmol then use Kelvin, but another gas constant COULD have its units in celcius for whatever reason and then you should use celcius (but it probably will never ever come up in real life or a problem)

[Leonardo Le Merle 1D]

Kelvin = Celsius + 273.15; the two are on the same scale so converting between the two isn't too tricky.

[Tanmay Singhal 1H]

kelvin because the gas constant R is in K. sometimes it is in C and in that case u would use C

[Kavya Immadisetty 2B]

Kelvin, just make sure all the units cancel

[Rodrigo2J]

Kelvin

[Alan Cornejo 1a]

Use kelvin and make sure your units match up.

[Elizabeth Harty 1A]

Kelvin

[Anushka Chauhan2B]

kelvin

[Ayushi2011]

Kelvin is always the unit for such equations.

[Charlene Datu 2E]

It's always in Kelvin because the R constant uses units of Kelvin

[BAlvarado_1L]

kelvin so it cancels out with the units of R

[SVajragiri_1C]

You use Kelvin, because the unit for R in this equation has K in it.

[EllieSchmidtke_4I]

Use Kelvin since this is the SI unit for temperature.

[Bella Townsend]

Typically, you only ever use celsius is there is a change in temperature (delta T) because then the units don't matter. The difference will be the same.

[Susan Chamling 1F]

Use Kelvin because it will cancel with the units for R.

[Ariel Guan 1H]

Kelvin because SI units

[Katie Phan 1K]

Kelvin

[Nick P 3D]

Using PV=nRT you always use kelvin

[David Jen 1J]

use kelvin.

[Will Skinner]

It is always kelvin.

[Rajshree 1F]

kelvin i am pretty sure

[Emma Strassner 1J]

Hi, you would use Kelvin and make sure to convert from other units like Celsius.

[Mursall M 2A]

You should be using Kelvin so it can cancel with the units for the R constant.

[Keeryth Sandhu 1H]

I'm pretty sure Kelvin

[Ismar Zamora]

Kelvin

[Maya Johnson 2a]

Use Kelvin.

[Gwirnowski 3B]

Kelvin is always used with the ideal gas law as the units need to cancel out in the end.

[Michelle Nguyen 3F]

Kelvin is the units used in the ideal gas law!

[Katelyn_Ortega_1D]

You should be using kelvin, not celsius.

[Taylor Newville 1C]

You would use Kelvin. If you are ever unsure about what units to use, look at the units of the equation's constant to see what needs to be canceled out. For the Ideal Gas Law, the gas constant R= 8.314 J/mol·K, so the temperature needs to be in Kelvins too.

[Crystal Pan 2G]

That equation requires the usage of Kelvins.

[Darlene Lien 3E]

You would use Kelvin. If you look at the constants and equations sheet, the units for the rate are in Kelvin. Hope this helps!

[Joshua Chung 2D]

Default to Kelvin here.

[Lauren Strickland 1B]

It would be kelvin.

[Rayna Irving 2C]

Kelvin because in this case the rate, R, is a value that corresponds with the unit Kelvin.

[Jack Kettering 3D]

Always use kelvin as this is the SI unit for temperature

[Bai Rong Lin 2K]

I believe we are supposed to use the kelvin when solving.

[Jiapeng Han 1C]

Temperature is in Kelvin!

[Brandon Le 3C]

Using Kelvin is more beneficial because it is a more accurate measurement of the movement of molecules that determine the temperature of a system.

[LeanneBagood_2F]

as everyone has already said, temperature is always in Kelvin. this is not limited to just the PV = nRT equation as we will see throughout the remaining weeks

[Sejal Parsi 3K]

I believe you would use Kelvin as the constant R uses that unit as well.

[Joshua Swift]

You would use Kelvin, but if you are calculating T, kelvin or celsius works.

[Violet Kwan 3H]

Kelvin is the SI unit for temperature, so I believe you would use that. Also, the conversion is just adding 273.15 to Celsius, so better just to be safe and convert to Kelvin.

[Ethan Goode 2H]

I believe you should be using Kelvin when looking at PV=nRT

[Edison Tham 3D]

Typically, since the gas constant R is given in Kelvin, we would use temperature in Kelvin when looking at the equation PV=nRT.

[Will Skinner]

It should be Kelvin

[Chinyere Okeke 2J]

In this class and most Thermodynamic classes in the US, we are doing our calculations in Kelvin, this is because a lot of values/constants have Kelvin in their units not Celsius. The only time you wouldn't need to change the degrees is when you are doing change in temperature since change in 1 K = change in 1 degree-Celsius.

[Claudia_Danysh_2B]

The temperature is supposed to be in Kelvin!!

[Rose_Malki_3G]

It is supposed to be in kelvin(:

[Charmaine Ng 2D]

You use Kelvin so that the units cancel out! :))

[Jordan Tatang 3L]

Kelvin

[jasmineculilap_3F]

kelvin bc R is in kelvin

[Ximeng Guo 2K]

Kelvin(K)
K=℃+273