11 & 12

thanks a lot

Question 11 (1 point) Given the following thermochemical data: 1. C2Hz(8) + 5/202(g) -> 2002(g) + H2OM) DH - -1.30 x10' 2. CH.CE) + P202 (8) --> 2002(e) + 3H2001) DH -- 1.56 x 10 3. Hz(8) + 1/2O2(g) --> H20 (1) DH - -2.86 x 10 kJ What is A4 for the following reaction? C H2(g) + 2H2(8) --> C2H6(8) -2.60 x10' KJ O-3.12 x10 kJ -3.72 x 10 KJ -5.46x10 K) 2.60 x 10' KJ Question 12 (1 point) Which of the following equations represents the correct heat of formation of water vapour? H3(g) + "/20218) --> H,00) H2(8) + 0(g) -> H2O(g) 2Hg) - 09 -> H2O(g) H (B) 02(8) > 2H20() H2(8) 2 02(g) => 110(8)