# Problem: Calculate ΔHrxn for the following reaction: Express the enthalpy in kilojoules to one decimal place.CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)given these reactions and their ΔH values:C(s) + 2H2(g) → CH4(g)    ΔH = −74.6 kJC(s) + 2Cl2(g) →CCl4(g)   ΔH = −95.7 kJH2(g) + Cl2(g) →2HCl(g)  ΔH = −184.6 kJ﻿

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Calculate ΔHrxn for the following reaction: Express the enthalpy in kilojoules to one decimal place.

CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)

given these reactions and their ΔH values:

C(s) + 2H2(g) → CH4(g)    Δ= −74.6 kJ

C(s) + 2Cl2(g) →CCl4(g)   Δ= −95.7 kJ

H2(g) + Cl2(g) →2HCl(g)  Δ= −184.6 kJ﻿

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