Calculating standard entropy

[AGaeta_2C]

When would you use the equation dS= C * ln (T₂/T₁) and when would you include the number of moles into that equation? I notice we've used both dS= C * ln (T₂/T₁) and dS= n* C * ln (T₂/T₁) to solve problems but I'm not sure when to apply which equation.

[Megan Cao 1I]

you would use dS= n* C * ln (T2/T1) when there is more or less than 1 mole of the substance. you would use dS= C * ln (T2/T1) if they dont specify of it it's 1 mole. you use this equations for thermal disorder, where the temperature is changing. be sure to note that C can be Cv or Cp depending on if there's constant volume or pressure

[Sam McNeill 1E]

When there is a temperature change, make sure to use this equation in kelvin. Also, moles are always taken into account I believe, but not written down when there is only 1 mol of substance. If moles are not given, I would use the PV=nRT equation to find the amount of moles.

[RichBollini4G]

you would use dS= n* C * ln (T2/T1) when there is more or less than 1 mole of the substance. you would use dS= C * ln (T2/T1) if they dont specify of it it's 1 mole. you use this equations for thermal disorder, where the temperature is changing. be sure to note that C can be Cv or Cp depending on if there's constant volume or pressure

Thank you!