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Question 16 (1 point) The standard molar enthalpy of combustion of ethane (CyH6(9)) is -1559.7 kJ mot 1. Which energy diagram corresponds to this process? Enthalpy Reaction coordinate Enthalpy -1559 Reaction coordinate Enthalpy - 1559 Reaction coordinate Enthalpy -1559 Reaction coordinate

Answer 1

eve given out when dhe enthalpy of Combustion is the heat energy mole of a substance burns completely in oxygen. C2H2 (g) 2002 + 3H₂0 (Athomb = 15597 kis/mol) The correct eption will be Energy Front Reaction coordinate. graph there is of 't It cannot be the answer here the energy is shown as a difference of activated complex from product. © Similarly this is also difference between activated complex and productos The endothermic reaction SH will be the oxidation Fez oz (s) + 3C0(g) —2 fe (s) + 3C0,G) +3 reduction where he is reduced from t3 to 0. Carbon is oxidised from 2 to th. (a) Iron is reduced, and the reducing و در +2: 15 agent is co.

(14) for ditration Reaction. 2He & BacOH) 2 H₂O + Ball2. Ni MV2 Ni Normality of acid V = volume of acid N₂ = Normality of Basicity Normality of Base (Balon) = volume of base. - 2x Molarity Normality of Hice = Molarity of tice. So, 39.908 0.143=25x2xM2 M₂ = 0.114 Molarity of Ba(OH)2 = 0.1849. or 13 10oo Naol of For 0. 200m NaOH solution 1000ml of solution contain 0.2 moles of Naok 225 ml of solution contain 0.2x225 moles 0.045 moles I mole of NaOH weigh 40g 0.045 male NaOH weigh 40x0.045 g = 1.8g of n