3 posts • Page 1 of 1
When does it matter or in what type of problems do we need to use either Kelvin or degrees Celsius? For example, problem chapter 8 #31 R= 8.314J/k.mol but the problem gives you the temperature in degrees celsius, do we need to convert the degrees celsius into kelvin to cancel out the temperature?
For that problem, since you are using the CHANGE in temperature, your answer will be the same whether you use celsius or kelvin. This is because 0 C = 273.15 K, so its just a transformation of the temperature scale.
Fortemperature changes, it doesn't matter if it is degrees Celsius or degrees Kelvin because the value of the difference would be the same (e.g. 1 C heats to 5 C = +4 C; 274.15 K heats to 278.15 K = +4 K). When using a formula that doesn't involve temperature change, where the other units indicate you should be using Kelvin, then you can convert Celsius to Kelvin (e.g. PV=nRT when R=8.314 J / mol. K)
Who is online
Users browsing this forum: No registered users and 2 guests