Two compounds are isomers if they have the same chemical formula but different arrangements of atoms. Use Table 8.3 to estimate H for each of the following gas-phase isomerization reactions and indicate which isomer has the lower enthalpy. (d) Methyl isocyanide → Acetonitrile

Video transcript

Hello everyone today we are being given to compounds that are said to be ice members of each other. That if they have the same molecular formula then they must have different structural chemical structures. Were then asked to calculate the reaction entropy for the gas face isomerization of metal format into acetic acid. So on the left here we have our method for mate. And on the right we have our acetic acid and then we are given the following bond NTP's. And so to calculate the reaction entropy or delta H. We must use the chemical, the formula that the delta H of the reaction is equal to the sum of the centerpiece of our bonds broken, minus the sum of the entropy of our bonds that our formed. When we use this equation here. We have the bonds being broken consisting of a C. O bond here as well as this C. H bond on the left here. So for bonds broken we're going to use 3 58 kilograms per mole Plus the other bond that's broken this C. H. bond which is a 413 kg per mole. We're going to subtract it by the bonds that are being formed in this chemical equation. So we have this C. C bond here and then we have this O. H. Bond here and the entropy energies for our C. O bond here is going to be 3 58 kg joules per mole. And we're going to add that to the O. H. P which is 4 63 kg joules per mole. When we add these numbers up, we're gonna get the delta H of the reaction is going to equal negative 40 kg joules per mole as our final answer. I hope it's helped, and until next time.