Which ideal gas law does a constant volume thermometer work on? [closed]








**Closed**. This question needs [details or clarity](/help/closed-questions). It is not currently accepting answers.
 
 






---








**Want to improve this question?** Add details and clarify the problem by [editing this post](/posts/88295/edit).




Closed 5 years ago.








[Improve this question](/posts/88295/edit) 



I searches online for my question and found mixed answers. I think the Ans. Should be Gay Lussac's Law as we are dealing with a case of constant volume but variable pressure and temperature. In many books the answer is given to be Charles Law. Would appreciate if someone gave me the ans. Thanks.




**Gay-Lussac's Pressure Temperature Law.**


The law simply states



> 
> The pressure of a gas of fixed mass and fixed volume, is directly proportional to the gas's absolute temperature.
> 
> 
> 


As telling temperature rises, the gas in the thermometer has its pressure increased in accordance with the law. Measuring this pressure gives us the temperature as per the *ideal gas equation*, or by using Gay-Lussac's law directly, taking the pressure ratio against a set base temperature and pressure.


 0