Based on the data in Table 1, identify the compensation temperature in enthalpy-

Question

Based on the data in Table 1, identify the compensation temperature in enthalpy-entropy compensation. Use the degree of Celsius as the unit of temperature in your answer. Round your answer to one decimal point. please show work, thank you :)

Temperatures and Enthalpies of the DSC Transitions for Human gamma-Interferon under Several pH and Buffer Concentration Conditions^a^apH values were measured at 25 degree C and corrected to the T_m values as indicated under Experimental Procedures.^bAsterisks indicate that reversibility was less than 40% after 2 h of cooling.

Explanation / Answer

There are not any high school level gas law problems that the ChemTeam is aware of that use the Celsius temperature directly in the calculation.

If you have a Celsius temperature in the problem, you MUST change it to Kelvin, in order to use it in your problem.

Sometimes your teacher might put a temperature in the problem, but you really don't need to use it. Your teacher is doing what he or she is driven to do: confuse poor teenage kids. The ChemTeam understands this fully for, you see, this is what happened in his class. (The ChemTeam is retired now.) All teachers know this is really fun! OK, back to work.

You can convert between Celsius and Kelvin like this: Kelvin = Celsius + 273.15. Often, the value of 273 is used instead of 273.15. Check with your teacher on this point. All examples to follow will use 273.

A point before going on to some problems: very often in gas law problems it looks like significant figure rules are being violated. The reality is that they are not. In reality, the significant figure concept is more complex than the simple rules taught at this level.

However, having said that, be careful to watch your teacher's actions in class and ask what the rules are in your class. If I am saying something different than what your teacher wants you to do, please don't use this phrase: "Well, there's some guy on the Internet who says you're wrong."

Last point: never, ever, use a degree sign on the symbol for Kelvin. Do not do this: °K. This is what is known as an 'idiot indicator.' You do that and your study partner will say "Didn't you learn anything in high school? You're an idiot." The ChemTeam will remain silent as to the reasons.

Also, never say 'degrees Kelvin.' This value: 225 K is said "two hundred twenty five Kelvins." Please trust the ChemTeam on these points.

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