The Reaction of Iron with Hydrochloric Acid Is Represented by the Following

question 44

Multiple Choice

The reaction of iron with hydrochloric acid is represented by the following thermochemical equation.
Fe(s) + 2HCl(aq) → FeCl₂(aq) + H₂(g) ; ΔH° = -87.9 kJ
How much heat is liberated at constant pressure if 0.154 g of iron reacts with 25.7 mL of 0.358 M HCl?

• A)1.85 kJ
• B)13.5 kJ
• C)0.242 kJ
• D)0.404 kJ
• E)87.9 kJ

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