Notice in the diagram that the energy of the products is higher than the energy

Question

Notice in the diagram that the energy of the products is higher than the energy of the reactants. Therefore, we know that this is an endothermic reaction with a positive AH value. Part B The energy diagram shown represents the chemical reaction between solid ammonium chloride and solid barium hydroxide octahydrate The H for this reaction is 54 8 kJ How much energy would be absorbed if 271 g of NH, Cl reacts? Express your answer with the appropriate units. 2NH, Cl(s) + Ba(OH2.8H 0(s)+2NHs(aq) + BaCl (aq) + 10H 00) Hints

Explanation / Answer

The energy was given absorbed by 2 mols NH4Cl (107.8 g).

Hence, the energy absorbed per gram of ammonium chloride = 54.8 kJ / 107.8 g = 0.508 kJ/g

The amount of heat absorbed by 27.1 g of NH4Cl = (0.508 kJ/g)(27.1 g) = 13.8 kJ

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