The standard enthalpies of formation at 300 K for CCl4(l), H2O(g), CO2 – InterviewSolution

1.	The standard enthalpies of formation at 300 K for CCl4(l), H2O(g), CO2(g) and HCl(g) are -107, -242, -394, and -93 kJmol−1 respectively. The value of ΔU for the reaction CCl4(l)+2H2O(g)→CO2(g)+4HCl(g) at 300 K is:
Answer» The standard enthalpies of formation at 300 K for $C C l_{4} (l), H_{2} O (g), C O_{2} (g) a n d H C l (g)$ are -107, -242, -394, and -93 $k J m o l^{- 1}$ respectively. The value of $Δ U$ for the reaction $C C l_{4} (l) + 2 H_{2} O (g) \to C O_{2} (g) + 4 H C l (g)$ at 300 K is:

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