Question

Chapter 7 Exercise 7.85 9 of 11 Review I Constants I Periodic Table Complete and balance each of the following equations for combustion reactions. Part A C2 He (9)+O2(g) Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ

Answer 1

reaction between ethane ( C to J and suggen (0) is a combustion reaction: So, in a combustion reaction it is sure that one of the reactants will be orygen and the mandatory products products are are carbon-di-oxide and water. So, the basic equation can be framed as: SHI(g) + alg) Co2 (9) + H₂o Wrapour States Etrone onygen carbon-di-oxide water The equation has unequal mumbers at a toms on each side respectively, we need to balance it. Balance, Number of atoms on reactant side c =2 Number of atome on product side UIO = 6 - First balance 2 carbon - NM atoms on product side. e-2 tiply by 2 with C = 2 H = 2 Balance = 2 H-atoms, side, H2o with (ng' on product c=2 H = 6 H=6 - 2. Q = 7 To balance i atoms, multiply or in reactant with tree tion 7/2.. C2 Holgt 7/202 (8) 2002 G + 3 H2O (8) 2x C₂ H₂ (g) +72 2 (g) 2 COL (9) + 3H20 911 so the balanced chemical equation, 262 Hag+ 7 02 (G) 4CO2(g) + 6H20G) al product side Ho (8) Capour State Reactant side = 4 H = 12 O = 14