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Q- 38-40 on Chemical thermodynamics for NEET/AIIMS (in Hindi)
madam ideal gas ke liye H ka value zero kyo hota hai
It is not not true for every case Rahul. It is true for an isothermal process because enthalpy and internal energy of an ideal gas are only T dependent, so if the T doesn't change, they don't change as well. so ∆U and ∆H will be zero for an ideal gas in this process.
Also, understand that U and H cannot be defined as such,but ∆U and ∆H can. So please be careful while using these terms.