Question

Calculate delta H rxn for each of the following:
(a) SiO2(s) + 4HF(g) > SiF4(g) + 2H2O(l)
(b) C2H6(g) + O2(g) > CO2(g) + H2O(g) [unbalanced]

6.54 Calculate AHºrxn for each of the following: (a) SiO2(s) + 4HF(g) → SiF4(g) + 2H20(1) (b) CH6(g) + O2(g) → CO2(g) + H2O(g

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Answer #1

4,4° = 4th producten - Hureacrent 1 KJ/mol a) 434 510, = -910-9 APHOHLF = -273-0 se Hºtza = -285.8. Aftsify = - 1614.9 Sioe (

6 CH619) + O2 (9) ►o (9) + H2069 1 Balance the equation first 26H6(9) +70,(9) >400, (9) + 6H2015) Af HaH6 =-94.68 A H coa = -

ди = ч дро, +ь руки,о - на -+ + Ано. 24x(-393-5)+( — 2ч.) — [2х(-34-68 ) ++(о) | -- 1,5 +4 — 1,459 -- 169-36 7 — 287 (ЧkТ

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