Calculate the standard enthalpy of formation of gaseous hydrogen fluoride (HF) using the following thermochemical information:...

Question

Question

Calculate the standard enthalpy of formation of gaseous hydrogen fluoride (HF) using the following thermochemical information:

C2H4(g) + 6 F2(g) 2 CF4(g) + 4 HF(g) H = -2486.3 kJ

CF4(g) C(s) + 2 F2(g) H = +680 kJ

C2H4(g) 2 C(s) + 2 H2(g) H = -52.3 kJ

H = ??? kJ

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Answer 1

Answer #1

lepov UUDLU * C Hut 6F22CFy + 4HF, DH = -2486.3K T & CF C +2 AH = 680KT CHu 2c + 2H₂ Att =-52.3KT Н+Е, -52HF 0 + x2 C₂ H₂ +6E

Answer 2

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