Question
In: Chemistry
Using the data in the appendix of text, calculate the standard enthalpy change for each of...
Using the data in the appendix of text, calculate the standard enthalpy change for each of the following reactions:
(A) Si(s) + 2F2(g) ⟶ SiF4(g)
(B) 2C(s) + 2H2(g) + O2(g) ⟶ CH3CO2H(l)
(C) CH4(g) + N2(g) ⟶ HCN(g) + NH3(g)
(D) CS2(g) + 3Cl2(g) ⟶ CCl4(g) + S2Cl2(g)
Solutions
Expert Solution
(A) Si(s) + 2F2(g) ⟶ SiF4(g)
H0 rex
= H0f
products - H0 f
reactant
= -1614.9Kj -(0 +0) = -1614.9KJ
(B) 2C(s) + 2H2(g) + O2(g) ⟶ CH3CO2H(l)
H0 rex
= H0f
products - H0 f
reactant
= -484.1-(0 +0 +0 ) = -484.1KJ
(C) CH4(g) + N2(g) ⟶ HCN(g) + NH3(g)
H0 rex
= H0f
products - H0 f
reactant
= -46.1+135.1 -(-74.9 + 0)
= 163.9KJ
(D) CS2(g) + 3Cl2(g) ⟶ CCl4(g) + S2Cl2(g)
H0 rex
= H0f
products - H0 f
reactant
= -19.5-100.4-(117.2+0)
= -237.1Kj/mole
queen_honey_blossom answered 2 years agoRelated Solutions
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