Question

a. Determine the Molar Enthalpies for the two reactions listed below. In each case, an excess of HCI is Temp. 2. Calorimetry used as the reactant. You can assume that the reactants are dilute within the aqueous system. Reaction Total Mass of Mass of Al (g) AlbOs (g) volume of change water (ml I-cc) +9.3 100 100 Al 0,(s)t lici (aq)-> 2.AP. (aa) -31 100g)一しNUA-しー0.3 b. Using calculations from, part a and the information provided below, determine ΔΗ' for the oxidation of Al to yield Also,: 2 Al (s) + 3/2 O2 (g) → A103 (s). H2 (g) + ½O2 (g) → H2O (l) 솨1°--286 kJ/mol

Answer 1

(Ignoring mau of other dı) Compoyn watek 1O11 x4193 Ur 4H:-99 33.92-メ27 a 062 K

20 3 man of water 100 x1-1008 там of刑20 3-0.5 Cisnoring mass of othor Componentt) Ssuu for lo2| At202 0.5

We have reactfoni - a9) Multiplying e3O by 2 ond ^ equa,onam pdding 2 amd equaion ,We get 2 2 2 2. 2 2x (-1062) (-239.32) 3x(-28G)